Types and tokens in visual processing: a double dissociation between the attentional blink and repetition blindness.
In rapid serial visual presentation tasks, correct identification of a target triggers a deficit for reporting a 2nd target appearing within 500 ms: an attentional blink (AB). A different phenomenon, termed repetition blindness (RB), refers to a deficit for the 2nd of 2 stimuli that are identical. What is the relationship between these 2 deficits? The present study obtained a double dissociation between AB and RB. AB and RB followed different time courses (Experiments 1 and 4A), increased target-distractor discriminability alleviated AB but not RB (Experiments 2 and 4A), and enhanced episodic distinctiveness of the two targets eliminated RB but not AB (Experiments 3 and 4B). The implications of the double dissociation between AB and RB for theories of visual processing are discussed.
Chun
M M
MM
Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, USA. marvin.chun@yale.edu
D001288:Attention; D001767:Blinking; D006801:Humans; D014796:Visual Perception