Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
46
pubmed:dateCreated
2004-11-19
pubmed:abstractText
The computational structure of an optimal motion detector was proposed to depend on the signal-to-noise ratio (SNR) of the stimulus: At low SNR, the optimal motion detector should be a correlation or "Reichardt" type, whereas at high SNR, the detector would employ a gradient scheme [Potters, M. & Bialek, W. (1994) J. Physiol. (Paris) 4, 1755-1775]. Although a large body of experiments supports the Reichardt detector as the processing scheme leading to direction selectivity in fly motion vision, in most of these studies the SNR was rather low. We therefore reinvestigated the question over a much larger SNR range. Using 2-photon microscopy, we found that local dendritic [Ca(2+)] modulations, which are characteristic of Reichardt detectors, occur in response to drifting gratings over a wide range of luminance levels and contrasts. We also explored, as another fingerprint of Reichardt detectors, the dependence of the velocity optimum on the pattern wavelength. Again, we found Reichardt-typical behavior throughout the whole luminance and contrast range tested. Our results, therefore, provide strong evidence that only a single elementary processing scheme is used in fly motion vision.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-10359834, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-10627851, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-10669515, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-10793242, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-11144367, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-11152745, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-11515952, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-11563532, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-11712978, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-11877530, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-12192402, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-14645469, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-2257281, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-2321027, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-2475948, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-2892201, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-2921651, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-3551763, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-3681769, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-3832620, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-3973762, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-3973763, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-4428631, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-4771216, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-4777327, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-521853, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-5617414, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-5682796, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-5833196, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-593352, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-7090191, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-7112947, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-8890292, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-9115730, http://linkedlifedata.com/resource/pubmed/commentcorrection/15534201-9743497
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0027-8424
pubmed:author
pubmed:issnType
Print
pubmed:day
16
pubmed:volume
101
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
16333-8
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Fly motion vision is based on Reichardt detectors regardless of the signal-to-noise ratio.
pubmed:affiliation
Max Planck Institute of Neurobiology, D-82152 Martinsried, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't