Malleable temporal integration of positional information for moving objects

Miller, Paul A and Arnold, Derek H (2015) Malleable temporal integration of positional information for moving objects. Journal of Experimental Psychology: Human Perception and Performance, 41 3: 623-630. doi:10.1037/xhp0000034

Author Miller, Paul A
Arnold, Derek H
Title Malleable temporal integration of positional information for moving objects
Journal name Journal of Experimental Psychology: Human Perception and Performance   Check publisher's open access policy
ISSN 1939-1277
Publication date 2015-06-01
Year available 2015
Sub-type Article (original research)
DOI 10.1037/xhp0000034
Open Access Status Not yet assessed
Volume 41
Issue 3
Start page 623
End page 630
Total pages 8
Place of publication Washington, United States
Publisher American Psychological Association
Language eng
Abstract One of the primary functions of visual processing is to generate a spatial mapping of our immediate vicinity, in order to facilitate interaction. As yet it is unclear how this is achieved, but the process likely involves an accrual of information over time—a temporal integration of positional information (Eagleman & Sejnowski, 2000; Krekelberg et al., 2000). Temporal integration is a common computational process evident in diverse settings, such as electrical engineering (Bryson & Ho, 1975) and neural coding (Rao, Eagleman & Sejnowski, 2001; Usher & McClelland, 2001). In the later context it is sometimes assumed that integration dynamics are immobile, and consequently that they can be diagnostic of a sensory system (Arnold & Lipp, 2011; Krauskopf & Mollon, 1971; Snowden & Braddick, 1991). Other data suggest that integration times can be flexible, varying in concert with the properties of a stimulus (Bair & Movshon, 2004) or environment (Ossmy et al., 2013). Our data provide behavioral support for malleable integration times. We examine a motion-induced illusion of perceived position linked to temporal integration, and use prolonged exposure to motion of different speeds (sensory adaptation) to modulate the dynamics of neural activity. Results show that perceived position is governed by a weighted average of positional estimates from multiple channels with distinct, fixed integration times. Postadaptation channel contributions are reweighted, resulting in coding that is optimized to the dynamics of the prevailing environment.
Keyword Temporal integration
Fröhlich effect
Spatial coding
Human vision
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Psychology Publications
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