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Data Fields

Floating-point eye event. More...

Data Fields

UINT32 time
 
INT16 type
 
UINT16 read
 
INT16 eye
 
UINT32 sttime
 
UINT32 entime
 
float hstx
 
float hsty
 
float gstx
 
float gsty
 
float sta
 
float henx
 
float heny
 
float genx
 
float geny
 
float ena
 
float havx
 
float havy
 
float gavx
 
float gavy
 
float ava
 
float avel
 
float pvel
 
float svel
 
float evel
 
float supd_x
 
float eupd_x
 
float supd_y
 
float eupd_y
 
UINT16 status
 

Detailed Description

Floating-point eye event.

The EyeLink tracker analyzes the eye-position samples during recording to detect saccades, and accumulates data on saccades and fixations. Events are produced to mark the start and end of saccades, fixations and blinks. When both eyes are being tracked, left and right eye events are produced, as indicated in the eye field of the FEVENT structure.

Start events contain only the start time, and optionally the start eye or gaze position. End events contain the start and end time, plus summary data on saccades and fixations. This includes start and end and average measures of position and pupil size, plus peak and average velocity in degrees per second.

Field Documentation

float ava

average area

float avel

avg velocity accum

float ena

ending area

UINT32 entime

end times

float eupd_x

end units-per-degree x

float eupd_y

end units-per-degree y

float evel

end velocity

INT16 eye

eye: 0=left,1=right

float gavx

average x

float gavy

average y

float genx

ending point x

float geny

ending point y

float gstx

starting point x

float gsty

starting point y

float havx

average x

float havy

average y

float henx

ending point x

float heny

ending point y

float hstx

starting point x

float hsty

starting point y

float pvel

peak velocity accum

UINT16 read

flags which items were included

float sta

starting area

UINT16 status

error, warning flags

UINT32 sttime

start times

float supd_x

start units-per-degree x

float supd_y

start units-per-degree y

float svel

start velocity

UINT32 time

effective time of event

INT16 type

event type


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