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dc.contributor.authorHunter, David William
dc.contributor.authorHibbard, Paul Barry
dc.date.accessioned2014-09-02T08:31:06Z
dc.date.available2014-09-02T08:31:06Z
dc.date.issued2012-05-22
dc.identifier.citationHunter , D W & Hibbard , P B 2012 , ' Efficient encoding of stereo information produces sparser responses to natural binocular images ' , AVA, AVA/BMVA spring (AGM) meeting 2012 , Cambridge , United Kingdom , 22/05/12 .en
dc.identifier.citationconferenceen
dc.identifier.otherPURE: 145100148
dc.identifier.otherPURE UUID: 57ec577b-9a66-44e2-a4e0-2875b178071e
dc.identifier.urihttps://hdl.handle.net/10023/5313
dc.description.abstractLi and Atick proposed a theory of efficient stereo coding in which the two eyes’ signals are transformed into uncorrelated binocular summation and differencing channels (Li & Atick (1994) Network, 5, 157-174; Li (1995) in The Neurobiology of Compuation: The Proceedings of the Third Annual Computation and Neural Systems Conference, J. Bower (ed) (Boston: Kluwer), 397-402). May, Zhaoping and Hibbard recently provided striking psychophysical evidence in support of this theory (May, Zhaoping & Hibbard (2012) Current Biology, 22(1), 28-32). Here, we assess the implications of this decorrelation stage for the subsequent encoding of binocular information. We applied Independent Component Analysis (ICA) to image patches sampled from (i) the left and right images of natural binocular pairs and (ii) the same images transformed into summation and differencing channels, with appropriate gain-control applied to the two channels. In both cases, the resulting ICA filters were pairs of Gabor-like receptive fields. In comparison to the results for untransformed images, ICA applied to the summation and differencing channels resulted in a modest, but significant increase in the kurtosis of responses. Efficient coding thus produces a sparser representation of natural binocular images.
dc.format.extent1
dc.language.isoeng
dc.rights© 2012. The Authors.en
dc.subjectBinocular Visionen
dc.subjectStereo Disparityen
dc.subjectBF Psychologyen
dc.subjectNeuropsychology and Physiological Psychologyen
dc.subject.lccBFen
dc.titleEfficient encoding of stereo information produces sparser responses to natural binocular imagesen
dc.typeConference posteren
dc.description.versionPostprinten
dc.contributor.institutionUniversity of St Andrews. School of Psychology and Neuroscienceen
dc.contributor.institutionUniversity of St Andrews. Institute of Behavioural and Neural Sciencesen
dc.description.statusNon peer revieweden
dc.identifier.urlhttp://www.theava.net/conf/index.php?conference=Meeting&schedConf=avabmva&page=paper&op=view&path%5B%5D=418en


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