Linked Life Data

9474374

Source:http://linkedlifedata.com/resource/pubmed/id/9474374

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1998-3-17
pubmed:abstractText
Wavelength sensitivity was measured in the guppyfish by means of optomotor responses to a special apparent-motion display. A set of red and green bars appeared to humans to move to the left if red was darker than green, but to the right if red was lighter than green. At equiluminance there was no apparent motion. By noting the direction in which the fish swam to follow the stripes we were able to record equiluminance points for red, green and blue. Store-bought guppies (Poecilia reticulata) were mildly protan compared with humans, and wild-strain guppies were strongly protan, being 50% more sensitive to short wavelengths and 67% more sensitive to medium wavelengths than human observers. We also measured optomotor responses to achromatic Michelson contrast: responses were maximum if the contrast exceeded 0.3. Finally, the optomotor threshold (signal/noise ratio) for motion coherence was 20% for fine dots and 40% for coarse dots. These stimuli should be easy to use on any non-verbal species.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0042-6989
pubmed:author
pubmed:issnType
Print
pubmed:volume
38
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
45-53
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Optomotor test for wavelength sensitivity in guppyfish (Poecilia reticulata).
pubmed:affiliation
Department of Psychology, UC San Diego, La Jolla 92093-0109, USA. sanstis@ucsd.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't