James Long Company
Software and Hardware Solutions
for Psychophysiological Research
-
James McMartin Long also serves as Vice-Chair
on the board of Protect the Adirondacks.
NB:
New York State's Adirondack Park faces many threats and challenges.
You can help protect the Park by becoming a member of the most
stalwart grassroots membership organization defending the
Park and the Forest Preserve:
Protect the Adirondacks.
Your support is greatly appreciated.
- James McMartin Long also volunteers with the Town of Caroga.
See TownOfCaroga.com for
more information.
- James McMartin Long also volunteers for the Caroga Arts Collective,
designing and printing concert programs.
An archive of past CAC concert program information is available
here.
-
NB:
We ship to new customers in the United States and Canada only.
-
NB:
Extensive online resources and training for existing clients.
Telephone or email for details.
- General Information About James Long Company
- Stimulation and Cognitive Challenges
- Acquisition
- Observation of Behavior
- Complete Physiology Analysis
Systems
- James Long Company has been developing
hardware and software products for the psychophysiological
research community since 1979.
- James Long Company consults in psychophysiology and
brain electrophysiology.
- Background
- Custom real-time data acquisition and control systems.
- Custom signal processing applications.
- Custom embedded system applications.
- UV through near IR spectrophotometer and clinical blood
serum analyzer design.
- Real-time operating system design.
- Over 42 years experience with Intel microprocessor family
starting with the 8008.
- Please telephone us so that we may discuss your needs and
goals and so that we may assist you in choosing among comparable methods.
- We accept written purchase orders from hospitals, universities
and government agencies in the US (terms are net 30 days) for
all capital purchases.
- For clients outside the United States, pre-pay by wire or
check in US dollars drawn on a US bank, add 5%, and add shipping/handling
charge; contact us for details.
- Return Policy: All sales are final.
- We provide consulting services on an hourly basis (plus
travel) and on a fixed-price basis.
- We design and produce custom hardware and software tailored
to your research needs.
- We assist in experimental design, methods, analysis, and
writing of papers.
- Roger Bakeman, Ph.D., Georgia State University, Atlanta
- Martha Ann Bell, Ph.D., Virginia Tech
- Joseph J. Campos, Ph.D., University of California, Berkeley
- Linda A. Camras, Ph.D., DePaul University, Chicago
- Jeffrey F. Cohn, Ph.D., University of Pittsburgh, Pittsburgh
- Pamela M. Cole, Ph.D., Pennsylvania State University, University Park
- Susan C. Crockenberg, Ph.D., University of Vermont, Burlington
- Richard J. Davidson, Ph.D., University of Wisconsin, Madison
- Lisa M. Diamond, Ph.D., University of Utah, Salt Lake City
- Janet A. DiPietro, Ph.D., Johns Hopkins University, Baltimore
- Kenneth A. Dodge, Ph.D., Duke University, Durham
- Nancy Eisenberg, Ph.D., Arizona State University, Tempe
- Mona Mounir El-Sheikh, Ph.D., Auburn University, Auburn
- Tiffany M. Field, Ph.D., University of Miami, Fort Lauderdale
- Nathan A. Fox, Ph.D., University of Maryland, College Park
- Barbara L. Fredrickson, Ph.D., University of Michigan, Ann Arbor
- John M. Gottman, Ph.D., University of Washington, Seattle
- Gabriele Gratton, M.D., Ph.D., University of Illinois, Urbana-Champaign
- Sydney L. Hans, Ph.D., University of Chicago Hospital, Chicago
- Lynne C. Huffman, M.D., Stanford University, Palo Alto
- Jerome Kagan, Ph.D., Harvard University, Cambridge
- Scott Makeig, Ph.D., Salk Institute, La Jolla
- Gregory A. Miller, Ph.D., University of Illinois, Urbana-Champaign
- Adrian Raine, Ph.D., University of Southern California, Los Angeles
- C. Cybele Raver, Ph.D., Cornell University, Ithaca, NY
- Susan A. Rose, Ph.D., Albert Einstein College of Medicine, Bronx
- Holly A. Ruff, Ph.D., Albert Einstein College of Medicine, Bronx
- Harold A. Sackeim, Ph.D., New York State Psychiatric Institute, New York
- Louis A. Schmidt, Ph.D., McMaster University, Hamilton, Ontario
- Matthew L. Speltz, Ph.D., Children's Hospital and Medical Center, Seattle
- David Spiegel, M.D., Stanford University School of Medicine, Stanford
- Steven K. Sutton, Ph.D., University of Miami, Coral Gables
- Andrew J. Tomarken, Ph.D., Vanderbilt University, Nashville
- Sandra R. Waxman, Ph.D., Northwestern University, Evanston
- Conforms to your required timing
- Competing products simply report how close they came to
your required timing but don't guarantee conformity
with your required timing.
In the recent NIMH funded OPT-TMS study, the STIM
system demonstrated 10 microsecond timing accuracy and
precision.
- Presents user defined auditory stimuli
- Select rise and decay time, curve, starting and ending sound
pressure level
- Select frequency, duration, and sound pressure level
- Presents user defined graphic image and character
graphic stimuli
- Optional operator monitoring of STIM during visual stimulus
presentation requires a second PC
- Controls external laboratory equipment
- Control pneumactic stimulators, electrical stimulators,
strobes, shutters, and other devices
(interface circuits are required)
- Transmits event signals to external data acquisition
hardware
- Precisely control event mark timing
- Log subject responses, reaction times, and other data to
a file for analysis software
- Allows complex trial definition scripts
- Implement virtually any deterministic (does not depend on
subject response) and many nondeterministic (those based on prior
subject response) experimental protocols
- Specify timings as latencies from trial onset or as delays
from previous actions
- Specify any number of actions within a trial
- Specify operator interruptible or non-interruptible portions
of trials
- Specify actions that occur prior to time zero (negative
latencies)
- Define the inter-trial interval timing as trial offset to
trial onset, onset to onset (stimulus onset asynchrony), or from any
latency to next onset
- Allows any number of trial orders, each with different
inter-trial intervals between trials
- Allows remote monitoring and control of STIM from
another computer or terminal
- Requires PC
- STIM user controllable stimulus software
- Optional hardware for audio stimuli
- Audio option 1: low cost 12-bit audio
- Audio option 2: 16-bit very high fidelity (distortion and
dynamic range equal to compact disk) stimulation and acquisition
(e.g. for acquiring spoken words)
- Interface and attenuator headphones/earphones
- Telephonics high-impedance headphones custom made for James
Long Company
- Aearo Eartone 3A insertable earphones
- Other Options
- VITC Video Vertical Interval Time Code Generator
- Parallel Printer Adapter for laboratory control signals
- Laboratory Interface Box to synchronize physiology data acquisition
and to record event marks, has 2 outputs and 1 input, requires Parallel
Printer Port
- One additional input or output BNC port for Laboratory Interface
Box. Maximum: 6 more outputs and 4 more inputs.
- Subject push-button box (electronics box and remote button
box)
- Telescopic photometer and amplifier for ultra-precise synchronization
of visual stimulation with physiology. Range of 4 m. Great for VERP
work.
-
Audio Tone Detector
with peak reading meter for synchronization
with audio stimuli
-
Pneumatic Stimulator
-
Vertical Sync Pulse Processor
- VGA/SVGA remote kit for remotely locating a second monitor/keyboard
25 feet away (other distances available)
- STIM Annual Support Plan: applications consulting and software
upgrades
- Additional STIM Reference Guide
- Provides a cognitive challenge designed to differentially
activate the left versus right hemisphere in the absence of task
variable differences between the shapes and words tasks which previous
research has shown to seriously confound studies of hemispheric
differences
- Presents experimenter created word and shape stimuli
in a recognition paradigm
- The word task typically requires subject detection of
synonyms
- The shape task typically requires subject detection of identical
stochastic shapes.
- Experimenter selects protocol
- A study item followed by a test item
- A study item followed by a pair of test items
- A pair of test items only (no study item)
- Experimenter selects control to vary task difficulty
to maintain a constant level of subject accuracy
- Varies set size
- Varies study item presentation time
- Varies test item recognition time limit
- Vary delay in presentation of test item
- Constant task difficulty
- Records
- Subject response
- Reaction time
- Accuracy
- Set size
- Outputs triggers for continuous EEG and visual evoked
potential protocols
- Complements EEG Analysis System and ERP Analysis System
companion products
- Requires
- PC
- CAP software
- JLC Laboratory Interface for STIM
- JLC Button Conditioning Box
- Presents the video analog of a moving pendulum for
EOG studies of schizophrenia
- Experimenter selects
- symbol from a set of one hundred twenty symbols
- symbol replacement frequency
- symbol order
- trial duration
- subject to screen distance or screen visual angle
- visual angular velocity or pendulum period or pendulum frequency
- pendulum radius or arc
- pendulum motion
- constant velocity
- simple pendulum
- sinusoidal horizontal component
- Tests subject's visual tracking of the movement of
pendulum
- Outputs the horizontal component of the pendulum movement
as an analog voltage to drive a data acquisition device
- Requires
- PC and monitor
- PENDULUM software
- Optional hardware to output the horizontal component
of the pendulum movement as an analog voltage to drive a
data acquisition device
- Provides a cognitive challenge suitable for young
children.
- Displays an engaging scene of "stars" prior to experiment
onset.
- Provides forced choice recognition task.
- Subject detects a randomly placed target (red letter "X")
in a random field of distracters (red letter "O"s, green letter
"X"s, and green letter "O"s).
- Task contains trials of varying number of distracters (5,
15, and 25 distracters for increasing task difficulty).
- Provides three conditions
- Possible red "X" among distracters (half red "O"s
and half green "X"s) with at least one distracter in each
of the four quadrants.
- Possible red "X", with one red "O" in each
of the three remaining quadrants and the remaining distracters all
green "X"s randomly distributed.
- Possible red "X" with one green "O" in each
of the four quadrants and the remaining distracters all green "O"s
randomly distributed.
- Provides auditory feedback for incorrect subject
responses.
- Records reaction time, subject response, experimental
condition, and trial number for later analysis.
- Requires
- PC and monitor
- STAR SEARCH software
- Works with optional hardware
- External push buttons (requires a game board or game
port)
- Presents air puff somatosensory stimuli
- Presents moving diaphram somatosensory stimuli
- Presents air puff olfactory stimuli
- Select among a set of different smells
- Enables control of stimulus parameters
- Select stimulus repetition rate
- Select stimulus pulse duration
- Select stimulus pressure
- Select among a set of different smells
- Enables remote control from
STIM Auditory/Visual Stimulus and Control
System
- Remotely control stimulus repetition rate
- Remotely control stimulus pulse duration
- Present any arbitrary pulse train
- Pneumatic Stimulator
- Synchronizes
visual stimulus presentation with the onset of vertical refresh on a
computer monitor for precise ERPs
- Compatible with all graphics cards
- Requires monitor with 5 BNC inputs
- Solves the problem when
6 ms to 16 ms uncertainty in vertical
refresh onset is too large for required ERP work or required reaction
time measurements
- Includes VESA to 5-BNC video cable
- Extends the
duration of the vertical refresh pulse out to 2 ms
- Makes available vertical refresh to
STIM Auditory/Visual Stimulus and Control
System
- Makes available vertical refresh to
any laboratory systems that require access to vertical sync
- Vertical Sync Pulse Processor
- Synchronizes
audio stimulus with
physiology acquisition
- Audio signal can trigger start of physiology acquisition
- Audio signal can provide event marks
- Works with tones, clap-boards, etc.
- Adjusts easily to
desired sound level using
with peak reading meter
- Compatible with all audio sources.
- Provides triggers to
STIM Auditory/Visual Stimulus and Control
System
- Provides triggers to a
VITC Vertical Interval Time Code generator for synchronizing
field-recorded video
- Audio Tone Detector
- Custom designed: Built to your specification, for
research in EEG, EMG, ECG, EOG, SCL, SCR, FP, EP, respiration, temperature,
oximetry, and somatic activity. Electro-cap electrode caps may be
purchased with your bioamp.
- Conformity: Meets AAMI/ANSI standard ES-1, 2.1.
- Tolerance: Handles high electrode impedances because
of high common-mode rejection, optical isolation, and high input impedance.
LEDs indicate which channel has excessive impedance.
- Expandability: Expandable from 8 channels to over
512 channels.
- Portability: Briefcase-sized bioamp weighs only 4
to 28 pounds; has recirculating/rechargable battery power.
- Ultra energy efficiency: Uses 1.2 W for a 32 channel
system; this is the power consumed by a two D-cell flashlight!
- Truly isolated: 4 kV peak optical and magnetic isolation
barriers using state-of-the-art technology.
- High impedance: Greater than 1 gigaohms;
(ECT protected inputs are available).
- Low noise: The typical noise levels, referred to input,
are approx. 0.2 µVrms at 100 Hz bandwidth
and approx. 1.6 µVrms at 10 kHz bandwidth.
- Negligible crosstalk between channels: Separation
is better than 10000:1 (greater than 80 dB), worst case, at full
output.
- High common-mode rejection: Typical CMRR at 50 Hz
or 60 Hz is greater than 112 dB. This reduces the requirement for
special screen-rooms and other low-EMI environments and signal-damaging
50 Hz or 60 Hz notch filters.
- Customer selected gains: Select gains from 100 to
200,000. A quad-gain option is available.
- Customer selected bandwidths: Select high-pass down
to 0.01 Hz and low-pass up to 10 kHz. A quad low-pass and quad high-pass
option is available. Butterworth 2-pole filter response is standard;
other types and 4-poles are optional.
- DC option: DC response is available with one of three
methods of baseline recovery: a local reset, a remote reset, and a
periodic reset with local control of the interval period. Unlike amplifiers
from other vendors, DC response does not increase noise!
- Rapid recovery: Special circuitry in each channel
automatically reduces "lead-off" recovery time to just a few
seconds when the high-pass filter is 0.01 Hz and even faster when
higher high-pass filter frequencies are selected.
- QRS (ECG) blanking: An option is available to eliminate
contamination of EMG.
- Self-monitoring: LED monitors on each channel provide
a continuous display of the integrity of each electrode connection.
Impedance measurements are optional with the bioamps; if the LED warning
is off then accurate data are being acquired.
- Remote monitoring: A TTL trouble-flag, available through
the output cable, indicates that a failure has occurred. Monitors
all electrodes, internal power circuits, and the battery.
- Internal calibration source: Precision calibration
signals facilitate accuracy and performance tests; sine, square, and
pulse waveforms are available.
- High reliability and serviceability: We use gold contacts
in all IC sockets and at all critical connections for stability and
reliability; all ICs are in sockets for serviceability.
- Remotely controllable: Optional remote gain, bandpass,
and calibration signal control.
- Ruggedized version: Optional corrosion and humidity
resistant version available for harsh tropical field use.
- Available only to bioamp purchasers.
- Available with any number of electrodes.
- Assists in accurate behavior coding of video
recordings
- Eliminates manual entry, transcription, or editing
of time data: simply type your phenomenon codes and
the codes are automatically combined with time codes
as read from the video player
- Speeds coding with single keystroke macros you define
for your coding scheme
- Allows complete freedom in design or selection of
behavioral coding scheme
- Works with either superficial coding or fine-grained
"micro-coding"
- Works the way you work
- Code in single or multiple passes
- Code forwards or backwards, at any speed from freeze-frame
through 2X speed
- "Play" through the coding at a later date to check
reliability. Or, for enhanced reliability, have two coders make
separate code files for later reliability analysis
- Scrolls display of observational coding or
physiological data synchronized with the video playback
- Checks all phenomenon codes you enter against
your dictionary and prohibits phenomenon codes not in your
dictionary
- Displays definitions beside the phenomenon codes
to help train your coders
- Transforms data
- Merge two or more code files into one code file for
reliability analysis or when two coders are assigned to code separate
types of phenomena, e.g., facial and vocalization coding
- Translate one coding scheme to another using a
dictionary
- Translate from FACS [Ekman, P. & Friesen, W. V. (1977).
Facial Action Coding System: Investigator's Guide. Palo Alto,
CA: Consulting Psychologists Press, Inc.] syntax to individual action
unit coding (and back)
- Collapse configurations (e.g,. FACS) into simpler
codes
- Collapse multiple phenomena into a single
phenomenon
- Translate times from video time to any format, e.g.,
minutes and seconds to seconds
- Exports to SPSS, SAS, and
Bakeman&Quera's SDIS [Bakeman, R. & Quera, V. (1995). Analyzing
interaction: sequential analysis with SDIS and GSEQ, NY, NY: Cambridge
University Press.]
- Analyzes data
- Determine ending times for events (create epoch
codes)
- Obtain statistics, e.g., counts, mean, standard deviation,
and percent duration
- Rank configurations (e.g., FACS) in order of frequency
of occurence
- Resample on an equal time interval basis
- Assign weights to each phenomenon and transform the
data into a format suitable for bivariate time-series analysis,
e.g., using the Gottman/Williams programs [Gottman, J. M. (1981).
Time-series analysis: a comprehensive introduction for social
scientists. NY, NY: Cambridge University Press.]
- Assess coder reliability with confusion matrix and
weighted&windowed Cohen's kappa [Bakeman, R. & Gottman, J. M. (1986).
Observing interaction: an introduction to sequential analysis.
NY, NY: Cambridge University Press.]
- Complements EEG, IBI, and other analysis system
products
- Use the code files you create with the Video Coding
System to select epochs to be analyzed by the EEG Analysis
System.
- View physiology from other systems
synchronized with video recordings
- Requires a PC, DVD, and a TV
- Video Coding System software
- VITC reader/generator
- Laboratory Interface Box to synchronize physiology data acquisition
and to record event marks
- Annual Support Plan: applications consulting and maintenance
upgrades
- Vertical Interval Time Code (VITC) generators
place a computer readable time code on each frame prior to recording.
The time code is placed above the video image and is not visible.
VITC readers read the time code off each frame during playback and
send it to the computer. A user selected number is also placed on
each frame for identifying a video recording.
- Any video camera may be used with these VITC
generators.
- Two camera protocols require some camera synchronization
solution:
- Use two VITC generators to record two separate but
synchronized video signals.
- Use a split-screen generator and a single DVD recorder;
images are synchronized, but each image occupies only half the
screen.
- Related items
- Video Coding System software
- Audio tone detector with peak reading meter for synchronization
of two video recordings recorded without VITC. Also synchronizes prerecorded
video or audio stimuli with video of observed behavior.
- Acquire continuous EEG and ERP data
- Eliminate expensive anti-aliasing filters with high-speed
acquisition
- Display data being acquired in real-time
- Display any combination of electrodes during
acquisition
- Score/remove artifact
- Automatically regress out eye blink
artifact
- Automatically detect eye movement and muscle tension
artifact
- Manually score artifact using a mouse
- Epoch any way you want, using
- Stimuli
- Any electrical event
- Overlapping epochs
- Subject behavior or other observational
coding
- Transform the data
- Re-reference to any new reference
voltage
- Average electrode
- Current Source Density (Laplacian second spacial
derivative)
- Average ear
- Convolve the data with a digital band-pass
filter
- Filter evoked potential data
- Filter prior to compressing data for archiving
- Resample the data
- Compress data for archiving
- Synchronize data with a second timebase
- Analyze evoked potential data
- Calculate average and one standard deviation
waveforms
- Calculate average of averages and difference
waveforms
- Calculate cross-lag (Pearson r) waveforms and
find lag to maximum r
- Display average and standard deviation
waveforms
- Display superimposed or offset
- Display in any color and scale
- Point to features using a mouse to automatically record
peaks and latencies
- Detect peaks automatically within windows via a polynomial
fit
- Export waveforms in ASCII to your favorite graphics
package
- Analyze continuous EEG data
- Spectrally analyze selected epochs
- Obtain spectral coherence (cross-spectral) analysis
between channel pairs
- Obtain weighted coherence using new methods developed
by James Long Company for assessment of shared power and unshared
power [Fox, N. A., Rubin, K. H., Calkins, S. D., Marshall, T. R.,
Coplan, R. J., Porges, S. W., Long, J. M., & Stewart, S. (1995). Frontal activation
asymmetry and social competence at four years of age. Child Development,
66, 1770-1784.]
- Obtain mean power and coherence across selected
epochs
- Complements Video Coding System companion
product
- Use the code files you create with the Video Coding
System to select EEG epochs to be analyzed by the EEG Analysis System.
The Video Coding System assists you in accurate observational
coding.
- EEG: EEG Analysis System software (for continuous EEG only).
- ERP: ERP Analysis System software (for evoked potentials only).
- EEG+ERP: EEG and ERP Analysis System software (both continuous EEG
and evoked potential capability).
- ERP option: Evoked potential option for EEG Analysis System
software.
- EEG option: Continuous EEG option for ERP Analysis System
software.
- COHERENCE: Spectral coherence analysis option for EEG Analysis System
software.
- EEG+ERP: EEG+ERP Annual Support Plan: applications consulting
and maintenance upgrades
- STREAM: Core software package for data acquisition plus continuous
acquisition option (80 channels) with real-time display of data being
acquired.
- 32 channel data acquisition
- 64 channel data acquisition
- 128 channel data acquisition
- Audio tone detector: Audio tone detector with peak reading meter for
synchronization of physiology with prerecorded audio or video
stimuli
- Acquires and digitizes EKG
- Extracts r-spike times automatically from digitized
raw EKG (ECG)
- Scales EKG automatically with no calibration or threshold
setting required
- Rejects movement artifact
- Rejects baseline shifts
- Rejects high amplitude t-wave and 60 Hz harmonics
with digital autoregressive filter
- Provides manual IBI editing capability
- Display EKG and r-spike marks graphically for precise
correction of r-spike times
- Remove spurious r-spikes with a single mouse
movement
- Draw missing r-spikes precisely with a single mouse
movement
- Don't arbitrarily split an IBI (as is required by
a leading competitor [Porges, S. W. (1989). MXedit Version 2.01
Instructions and Users Manual. Bethesda, MD: Delta-Biometrics,
Inc.]) and weaken RSA measurement
- Calculates mean heart rate within selected epochs
- Calculates heart rate variability (respiratory sinus
arrhythmia or vagal tone) within selected epochs
- Prorates IBIs to an equal-time-interval
basis
- Removes trends from IBIs using moving
polynomial
- Spectrally analyzes detrended and prorated IBIs using
discrete Fourier transforms
- Calculates variability due to RSA (vagal tone),
baroreceptor, and theromoregulation.
- Calculates respiratory sinus arrhythmia on each inspiration/expiration
(requires bellows respiration option)
- Avoids confounding RSA (vagal tone) with tonic
shifts in heart rate that have spectral characteristics close to
respiration frequencies
- Complements Video Coding System companion
product
- Use the code files you create with the Video Coding
System to select IBI epochs to be analyzed by the IBI Analysis System.
The Video Coding System assists you in accurate observational
coding.
- Complements EEG Analysis System companion
product
- Use the same epoch files for epoching both EEG and
IBI data. The EEG Analysis System provides automatic and manual editing
of EEG for artifact and discrete Fourier transforms (DFT), coherence
analysis, and evoked potential analysis of selected epochs.
- Requires a PC and data acquisition hardware
- IBI Analysis System software
- Annual Support Plan: applications consulting and maintenance
upgrades
- Optional compatible hardware and software
- Single channel optically isolated bioamplifier
- Streaming data acquisition software with real-time display during
acquisition
- 32 channel data acquisition
- Additional IBI Analysis System Reference Guide
- Transduces, acquires, digitizes, and analyzes several
physiological measures
- Requires one or two PCs and:
- PHY software for analyzing, prorating, and second-by-second
reporting of: heart rate, finger pulse amplitude, finger pulse transmission
time, ear pulse amplitude, ear pulse transmission time, skin conductance
level, skin conductance response, skin temperature, respiration period,
respiration depth (uncalibrated), respiratory sinus arrhythmia, somatic
activity, diastolic and systolic blood pressure, subject rating dial,
and event mark channel. This software is highly modular, comprising
a suite of programs to derive each of the measures and a program to
laminate each ASCII report column onto a multicolumn ASCII report
file. New measure may be added easily, including user created
measures.
- IBI Analysis System software for r-spike detection, editing,
prorating, detrending, and RSA (vagal tone) spectral analysis (required
for HR, FP, EP, RSA)
- Optional items
- Annual Support Plan: applications consulting and maintenance
upgrades
- Additional PHY Reference Guide
- Additional IBI Analysis System Reference Guide
- BIO-8, transducers and optically isolated amplifiers for:
ECG: 1-1000 Hz bandpass, 500 gain, 2 microvolts p-p noise;
Skin Conductance Level: 2.5 V = 25 microsiemens, 0.5 V rms excitation;
Skin Conductance Response: 2.0 V = 2.0 microsiemens, 0.01-10 Hz bandpass;
Finger pulse: gain control and LED bar graph to assist setup, photoelectric
type;
Ear pulse: gain control and LED bar graph to assist setup, photoelectric
type;
Respiration: air bellows, gain and balance controls and LED bar graph
signal display to assist placement;
Skin temperature: -2.5 V = 15 Celsius, 2.5 V = 40 Celsius, settling
time is less than 5 seconds, thermocouple probe can be taped to subject's
skin;
Somatic activity: piezo-electric accelerometer (one-axis), gain control
and LED bar graph to assist setup.
(See
Isolated
Bioamplifiers.)
- Streaming data acquisition software
- 32 channel A/D
- Optional hardware for synchronization with video
stimulus
- Audio tone to digital (TTL) signal converter with peak reading
meter and manual trigger switch.
- Cabling between control & acquisition computers & audio tone
converter.
- Cable from player's audio output to Audio Tone Detector
- Optional hardware and software for simultaneous observation
of behavior
- Acquires EDA, FPV, EOG, and RT
- Analyzes orientation response using the algorithm
James Long Company developed for Dr. Alvin Bernstein, Ph.D., SUNY
Downstate Medical Center
- Scores startle blink in EOG based on experimenter
chosen parameters
- Blink latency
- Blink amplitude
- Scores orientation response in skin conductance (EDA)
based on experimenter chosen parameters
- EDA response latency
- EDA response slope
- EDA response rise time
- Scores constriction in FPV using a quadratic least
squares fit based on experimenter chosen parameters
- Constriction latency
- Constriction magnitude
- Measures post-stimulus v. pre-stimulus heart
rate
- Measures pulse transit time
- Measures reaction time
- Requires biological preamplifiers/couplers, PC,
data acquisition hardware and software, and stimulus source
- ORIENT software
- Annual Support Plan: applications consulting and maintenance
upgrades
- Streaming data acquisition software with real-time display during
acquisition
- 32 channel data acquisition
- Custom transducers and amplifiers for Skin conductance,
Finger pulse, Ear pulse, Skin temperature, ECG, Respiration, and Somatic
activity. (See
Isolated
Bioamplifiers.)
- Optional auditory stimulus hardware and software (requires
second PC)
- STIM user controllable auditory (and visual) stimulus software
- STIM Annual Support Plan: applications consulting and maintenance
upgrades
- Audio option 1: 12-bit audio
- Audio option 2: 16-bit high fidelity stimulus generation and
acquisition (e.g. for acquiring spoken words)
- Headphone interface and attenuator for high impedance
headphones
- Parallel Printer Adapter for laboratory control signals
- Laboratory Interface Box to synchronize physiology data acquisition
and to record event marks (requires Parallel Printer Adapter)
- Acquires EMG physiology
- Analyzes startle response using two methods
- Uses bandpass filter, rectify, and low-pass filter
method for traditional analysis
- Uses Fourier transform spectral method for precise
frequency band selection
- Rejects trials with baseline blinks
- Scores startle blink based on experimenter chosen
parameters
- Reports blink latency
- Reports blink amplitude
- Requires biological preamplifiers/couplers, PC,
data acquisition hardware and software, and stimulus source
- Startle analysis software
- Annual Support Plan: applications consulting and maintenance
upgrades
- Optional physiology acquisition hardware and
software
- Single channel optically isolated bioamplifier
- 32 channel data acquisition
- Streaming data acquisition software with real-time display during
acquisition
- Optional auditory stimulus hardware and software (requires
second PC)
- STIM user controllable auditory (and visual) stimulus
software
- STIM Annual Support Plan: applications consulting and maintenance
upgrades
- Audio option 1: low cost 12-bit audio
- Audio option 2: 16-bit very high fidelity (equal to compact
disk)
- Headphone interface and attenuator for high impedance headphones
- Custom Telephonics high impedance headphones
- Aearo Eartone 3A insertable earphones
- Parallel Printer Adapter for laboratory control signals
- Laboratory Interface Box to synchronize physiology data acquisition
and to record event marks (requires Parallel Printer Adapter)
- Optional potentiated startle hardware
- Audio tone detector with peak reading meter for synchronization
of physiology with prerecorded audio or video stimuli
Copyright © 2022 James McMartin Long.
January 1, 2022