The Speed of Attentional Shifts in the Visual Field

The scanning speed of focal visual attention was measured directly by flashing a sequence of two, three, or four numerals one by one at random retinal positions and at a distance from each other to avoid interference between the numerals. Each numeral was followed by a mask pattern so the observers...

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Published in:Proceedings of the National Academy of Sciences - PNAS 1991-03, Vol.88 (5), p.1812-1814
Main Authors: Saarinen, Jukka, Julesz, Bela
Format: Article
Language:English
Subjects:
Attention
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Humans
Perception
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Time Factors
Vision
Visual Fields
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container_title Proceedings of the National Academy of Sciences - PNAS
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creator Saarinen, Jukka
Julesz, Bela
description The scanning speed of focal visual attention was measured directly by flashing a sequence of two, three, or four numerals one by one at random retinal positions and at a distance from each other to avoid interference between the numerals. Each numeral was followed by a mask pattern so the observers had to move their focal attention in the visual field in synchrony and at the same speed as the presentation rate of the numerals in order to recognize every numeral in the stimulus sequence. Observers could recognize the numerals orders of magnitude above the theoretical chance level of performance even when the presentation rate was as fast as 33 ms per numeral. However, the temporal order of the numerals was perceived rather poorly at the fast presentation rates and for the sequences of four numerals.
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1091-6490
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source JSTOR Archival Journals and Primary Sources Collection; PubMed Central
subjects Attention
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Humans
Perception
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Time Factors
Vision
Visual Fields
title The Speed of Attentional Shifts in the Visual Field
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