In:
Perception, SAGE Publications, Vol. 40, No. 6 ( 2011-06), p. 743-746
Abstract:
The planarian flatworm is one of the simplest animals to develop two eyecups that enable them to detect the presence and direction of light, which they typically avoid. In this study we assessed responses of planaria to different intensities of light. We found that they exhibited a graded, sigmoidal, photonegative response to light intensity. A two-octave increase in luminance (on the upward slope of the sigmoid) corresponded to a 9% increase in the speed planaria travelled to avoid light.
Type of Medium:
Online Resource
ISSN:
0301-0066
,
1468-4233
Language:
English
Publisher:
SAGE Publications
Publication Date:
2011
detail.hit.zdb_id:
2013004-1
SSG:
5,2
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