Fixation offset facilitates saccades and manual reaching for single but not multiple target displays

Turning off a fixation point, typically for 200 ms, before the onset of a peripheral target substantially reduces saccadic reaction times. This facilitatory effect generated by an inserted temporal gap between fixation offset and the target appearance is called the “gap” effect [J Opt Soc Am 57:1030–1033, 1967]. We show that the gap reduces the initial… (More)