|
Computational Cognition
Cognition & Communication
Research Studies & Opportunities
Downloads
|
Tour the Cognition and Communication Lab
Laboratory Facilities
Pictures
Video
Laboratory Facilities
We are located in several rooms in the Psychology Building
at Georgia Tech.
Eye Tracking
ISCAN corneal reflection remove video eye tracker running
at 120 Hz.
SMI Eyelink head mounted binocular eye tracker
running at 250 Hz.
Both trackers are used for lab projects as well as some projects run by other
students and faculty in the Psychology Department at Tech. Experiment
generation and data collection is done using our software that we developed
both at Tech and at Stanford (Thanks to Amit Mookerjee, Stanford and Madan Jampani,
Tech). Currently this software (called Eye2) allows us to set up experiments
that involve the simultaneous presentation of video and auditory stimuli while
we record eye movements, digitize speech, and other events such as button presses
or mouse movements all with very high temporal resolution. Software is
writtin in C++ and versions run in DOS and more recently, RT-Linux, a realtime
version of Linux from FSM-Labs.
Computing Hardware
Many (number seems to constantly vary) Intel Pentium machines
(single and dual processors) run a mix of RedHat
Linux (predominatly),
Windows98 (a
few). There are also several Macintosh machines floating around.
Computing Software
Experiment software
Macintosh machines currently run an old version of PsyScope. Intel machines
run experiments that we've written in C++ in native DOS or we use the Eye2 software
with eye tracking functions disabled. This software allows us to use the
PC soundcard as a voice key and also makes the set up of experiments extremely
fast.
We use RTLinux from FSM Labs for running many
and soon, most of our experiments.
Analysis
Parsing of eye position data into fixations and saccades is done using several
programs written in Matlab. Other
programs also written in Matlab allow us to fairly easily conduct analyses of
eye position relative to picture coordinates and the data is output in
a format so it can be imported into other programs such as SPSS or S+.
We also have Matlab routines for measuring voice onset time within a digitized
sound file. More detailed speech measurements (e.g., measurement of the
time until onset of a word embedded in speech) can be done using
CMU-Sphinx software.
Pictures
Click on picture to enlarge
Video
Videos are in MPEG format (right click to download).
Video 1 -- 763.0 kb: Walking into lab
Video 2 -- 566.0 kb: View group experiment room
Video 3 -- 809.0 kb: View Eyetracking room
(1)
Video 4 -- 197.0 kb: View Eyetracking room
(2)
|
