Document Detail


Elaborated Reichardt detectors.
MedLine Citation:
PMID:  3973763     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The elaborated Reichardt detector (ERD) proposed by van Santen and Sperling [J. Opt. Soc. Am. A 1, 451 (1984)], based on Reichardt's motion detector [Z. Naturforsch. Teil B 12, 447 (1957)], is an opponent system of two mirror-image subunits. Each subunit receives inputs from two spatiotemporal filters (receptive fields), multiplies the filter outputs, and temporally integrates the product. Subunit outputs are algebraically subtracted to yield ERD output. ERD's can correctly indicate direction of motion of drifting sine waves of any spatial and temporal frequency. Here we prove that with a careful choice of either temporal or spatial filters, the subunits can themselves become quite similar or equivalent to the whole ERD; with suitably chosen filters, the ERD is equivalent to an elaborated version of a motion detector proposed by Watson and Ahumada [NASA Tech. Memo. 84352 (1983)]; and for every choice of filters, the ERD is fully equivalent to the detector proposed by Adelson and Bergen [J. Opt. Soc. Am. A 2, 284-299 (1985)]. Some equivalences between the motion detection (in x, t) by ERD's and spatial pattern detection (in x, y) are demonstrated. The responses of the ERD and its variants to drifting sinusoidal gratings, to other sinusoidally modulated stimuli (on-off gratings, counterphase flicker), and to combinations of sinusoids are derived and compared with data. ERD responses to two-frame motion displays are derived, and several new experimental predictions are tested experimentally.(ABSTRACT TRUNCATED AT 250 WORDS)
Authors:
J P van Santen; G Sperling
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of the Optical Society of America. A, Optics and image science     Volume:  2     ISSN:  0740-3232     ISO Abbreviation:  J Opt Soc Am A     Publication Date:  1985 Feb 
Date Detail:
Created Date:  1985-03-22     Completed Date:  1985-03-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8402086     Medline TA:  J Opt Soc Am A     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  300-21     Citation Subset:  IM; S    
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MeSH Terms
Descriptor/Qualifier:
Humans
Models, Psychological*
Motion Perception*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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