Extract ratio of target fixation between a `min_time` and `max_time`. You can supply timestamps to `min_time` and `max_time` (e.g timestamp of begin escape) to average over only a period, or use the entire duration of the provided data frame.

Extract ratio of target fixation between a `min_time` and `max_time`. You can supply timestamps to `min_time` and `max_time` (e.g timestamp of begin escape) to average over only a period, or use the entire duration of the provided data frame.

extract_fixation(df, target, min_time = min(df$time), max_time = max(df$time))

Arguments

df

Eye tracker data frame. Expected columns are `time` and `focus_object_raw`.

target

Unity's internal target name (e.g. as returned by `find_unity_threat_name`)

min_time

minimum time in s (default trial start)

max_time

maximum time in s (default trial end)

Value

Ratio of target fixations (0-1), between `min_time` and `max_time`.