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ERIC Number: EJ993770
Record Type: Journal
Publication Date: 2012-Oct
Pages: 9
Abstractor: As Provided
Reference Count: 46
ISSN: ISSN-0096-1523
Great Expectations: Temporal Expectation Modulates Perceptual Processing Speed
Vangkilde, Signe; Coull, Jennifer T.; Bundesen, Claus
Journal of Experimental Psychology: Human Perception and Performance, v38 n5 p1183-1191 Oct 2012
In a crowded dynamic world, temporal expectations guide our attention in time. Prior investigations have consistently demonstrated that temporal expectations speed motor behavior. We explore effects of temporal expectation on "perceptual" speed in three nonspeeded, cued recognition paradigms. Different hazard rate functions for the cue-stimulus foreperiod were used to manipulate temporal expectations. By computational modeling we estimated two distinct components of visual attention: the temporal threshold of conscious perception (t[subscript 0] ms) and the speed of subsequent encoding into visual short-term memory (v items/s). Notably, these components were measured independently of any motor involvement. The threshold t[subscript 0] was unaffected by temporal expectation, but perceptual processing speed v increased with increasing expectation. By employing constant hazard rates to keep expectation constant over time, we further confirmed that the increase in perceptual speed was independent of the cue-stimulus duration. Thus, our results strongly suggest temporal expectations optimize perceptual performance by speeding information processing. (Contains 2 tables, 5 figures and 1 footnote.)
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Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Denmark