User manual

42 EyeLink 1000 Host Application

2.5 Mouse Simulation Mode

You can use a mouse on the EyeLink 1000 Host PC to simulate an eye to

practice calibration and tracking alone or to test experiments during

development if a test subject is not available. Select “Mouse Simulation” in the

“Set Options” screen to enable mouse simulation. If the mouse is not moving at

your intended location, you may first perform a calibration on the mouse device

(See section 3.7 “Calibration”).

2.6 Configuration Files and Experiment Directories

Most EyeLink 1000 options are configured within the Host application, however

there are some lower level options that are specified by editing the configuration

files (*.INI) or by sending commands from the Display PC via the Ethernet link.

The configuration files are loaded by the EyeLink 1000 from the current

directory (where ‘ELCL was typed from) and if not found there, from the

directory containing the tracker program (C:\ELCL\EXE).

This makes it possible to create custom configurations for experiments without

editing the files in the C:\ELCL\EXE directory, by placing the modified versions

of the *.INI files in the directory where the EyeLink tracker is invoked from. If

your experiment will be using option settings that are non-standard for your

lab, it makes sense to create a directory on the EyeLink Host PC for the

experiment, copy any configuration files, the camera file *.SCD, and the

ELCL.EXE file into this directory that need to be modified for this experiment,

and to invoke the tracker from this directory. Alternatively, you may put all of

the modified commands in the FINAL.INI file, which will be the last batch to be

processed by the tracker and thus override the settings listed in other .INI files.

The EDF files for an experiment are written to a disk partition and directory

based on the parameters set in the DATA.INI file. The default parameters

specify that data is written to a disk partition called “EYELINK” and to a root

directory called “\ELCL\DATA”. If this partition / directory is not found, the

data is written to the directory that the ELCL.EXE was started from. As

mentioned above, you can specify an experiment specific data directory by

copying the DATA.INI file to your experiments launch directory and modifying

the “data_drive_name” and “data_drive_directory” parameters.

This is a list of all EyeLink configuration files, and what they control:

ANALOG.INI Optional analog output hardware interface configure,

clock/strobe control.