ASC files can contain anywhere between 125 to 2000 rows of samples for every second of recording,
meaning that the resulting files can be very large (1.2 million rows of samples for 20 minutes at
1000Hz). As a result, importing some ASC files can be slow, and the resulting data frames can
take up 100's of MB of memory. To speed up import and greatly reduce memory load, you can choose
to ignore raw samples and only import events by setting the samples parameter to FALSE
.
This function returns a list containing the following possible data frames:
raw
Raw sample data
sacc
Saccade end events
fix
Fixation end events
blinks
Blink end events
msg
Messages sent or received by the tracker
input
Input port (TTL) events
button
Button box / gamepad events
info
Tracker settings/configuration metadata
The names of the columns in these data frames correspond to column names given in the ASC
section of the EyeLink 1000 User's Guide.
Note that this function cannot import EDFs directly; they must be converted to plain-text ASC
using the edf2asc utility before importing.