Contrast Adaptation Implies Two Spatiotemporal Channels but Three Adapting Processes.
The contrast gain control model of adaptation predicts that the effects of contrast adaptation correlate with contrast sensitivity. This article reports that the effects of high contrast spatiotemporal adaptors are maximum when adapting around 19 Hz, which is a factor of two or more greater than the...
| Publicado en: | Journal of Experimental Psychology. Human Perception & Performance Vol. 33; no. 6; pp. 1283 - 1297 |
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| Autores principales: | , |
| Formato: | Artículo |
| Publicado: |
American Psychological Association
December 2007
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=511372916&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 511372916 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00961523 EPH jtl: Journal of Experimental Psychology. Human Perception & Performance issn: 00961523 maglogo: N pubinfo: dt: December 2007 vid: 33 iid: 6 pid: 34 pub: American Psychological Association artinfo: ui: 511372916 10.1037/0096-1523.33.6.1283 ppf: 1283 ppct: 14 formats: tig: atl: Contrast Adaptation Implies Two Spatiotemporal Channels but Three Adapting Processes. aug: au: Langley, Keith Bex, Peter J. su: Physiological adaptation Vision Space perception Human information processing sug: subj: Physiological adaptation Vision Space perception Human information processing ab: The contrast gain control model of adaptation predicts that the effects of contrast adaptation correlate with contrast sensitivity. This article reports that the effects of high contrast spatiotemporal adaptors are maximum when adapting around 19 Hz, which is a factor of two or more greater than the peak in contrast sensitivity. To explain the discrepancy, the predictions made by parallel versus cascaded models of spatiotemporal processing are compared. It is demonstrated that a parallel two-temporal channel model, in which the adaptive attenuation of a channel is proportional to its response, cannot explain the effects of adaptation on threshold contrast but that a cascaded model can. The cascaded model suggests that the visual system temporally encodes spatiotemporal signals via an adaptive transient encoding process that lies in cascade with an adaptable two-temporal channel system of sustained versus transient processes. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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