[visionlist] Peri-Saccadic Perception of Objects and Space

[Fred Hamker]

Dear Members of the visionlist,


since PLoS Comput Biol is not one of the primary Journals scanned by  
researchers from vision science, I would like to announce the  
following article to you.

Best

Fred Hamker


The Peri-Saccadic Perception of Objects and Space
Hamker FH, Zirnsak M, Calow D, Lappe M (2008) PLoS Comput Biol 4(2): e31


Eye movements affect object localization and object recognition.  
Around saccade onset, briefly flashed stimuli appear compressed  
towards the saccade target, receptive fields dynamically change  
position, and the recognition of objects near the saccade target is  
improved. These effects have been attributed to different mechanisms.  
We provide a unifying account of peri-saccadic perception explaining  
all three phenomena by a quantitative computational approach  
simulating cortical cell responses on the population level. Contrary  
to the common view of spatial attention as a spotlight, our model  
suggests that oculomotor feedback alters the receptive field  
structure in multiple visual areas at an intermediate level of the  
cortical hierarchy to dynamically recruit cells for processing a  
relevant part of the visual field. The compression of visual space  
occurs at the expense of this locally enhanced processing capacity.


Please find the article here:
http://compbiol.plosjournals.org/perlserv/?request=get- 
document&doi=10.1371/journal.pcbi.0040031


--------------------
PD Dr. Fred H Hamker
Institute of Psychology
Westf. Wilhelms-Universitaet Muenster
Fliednerstr. 21
D-48149 Münster
Germany

Tel:+49 (0)251/83-34171
Fax:+49 (0)251/83-34180
email: fhamker at uni-muenster.de
www: http://wwwpsy.uni-muenster.de/Psychologie.inst2/AELappe/personen/ 
hamker.html




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