Comparison of Ganglion Cell Signals and Psychophysical Localization of Moving Targets Can Help Define Central Motion Mechanisms

Perception ◽  
10.1068/p5200 ◽  
2005 ◽  
Vol 34 (8) ◽  
pp. 975-981 ◽  
Author(s):  
Barry B Lee ◽  
Lukas Rüttiger ◽  
Hao Sun
Keyword(s):  
Ganglion Cell ◽  
Moving Targets ◽  
Vernier Acuity ◽  
Complex Relation ◽  
Cell Responses ◽  
Central Motion ◽  
Target Visibility ◽  
Stochastic Properties ◽  
Physiological Substrates ◽  
Cell Signals

Vernier acuity thresholds can be related to visibility of targets. This is considered in relation to retinal signals. Spatial precision of macaque ganglion cell responses to moving targets was assessed by neurometric analysis and compared with psychophysical performance. Under some conditions the amplitude of ganglion cell signals per se may relate target visibility to spatial precision of psychophysical performance. Other conditions are more complex; we suggest central mechanisms may adapt their properties, eg their dimensions, depending on the stochastic properties of ganglion cell signals. Thus, the relation of Vernier acuity to the visibility of targets is a rule of thumb which has a complex relation to physiological substrates.

scholarly journals The spatial precision of macaque ganglion cell responses in relation to vernier acuity of human observers

1995 ◽  
Vol 35 (19) ◽  
pp. 2743-2758 ◽  
Author(s):  
Barry B. Lee ◽  
Christian Wehrhahn ◽  
Gerald Westheimer ◽  
Jan Kremers
Keyword(s):  
Ganglion Cell ◽  
Vernier Acuity ◽  
Cell Responses

Spectral and spatial coding of ganglion cell responses in goldfish retina.

1972 ◽  
Vol 35 (1) ◽  
pp. 73-86 ◽  
Author(s):  
H Spekreijse ◽  
H G Wagner ◽  
M L Wolbarsht
Keyword(s):  
Ganglion Cell ◽  
Spatial Coding ◽  
Cell Responses ◽  
Goldfish Retina

scholarly journals Electroretinograms and Retinal Ganglion Cell Responses in the Skipjack Tuna

1973 ◽  
Vol 39 (3) ◽  
pp. 265-273 ◽  
Author(s):  
Isao HANYU ◽  
Tamotsu TAMURA ◽  
Hiroshi NIWA
Keyword(s):  
Ganglion Cell ◽  
Retinal Ganglion Cell ◽  
Retinal Ganglion ◽  
Skipjack Tuna ◽  
Cell Responses

scholarly journals Retinal mechanisms of visual adaptation in the skate.

1975 ◽  
Vol 65 (4) ◽  
pp. 483-502 ◽  
Author(s):  
D G Green ◽  
J E Dowling ◽  
I M Siegel ◽  
H Ripps
Keyword(s):  
Ganglion Cell ◽  
Cell Activity ◽  
Receptor Potential ◽  
Visual Adaptation ◽  
Cell Discharge ◽  
Cell Responses ◽  
Electrical Potentials ◽  
Rate Of Recovery ◽  
Network Mechanism ◽  
Different Levels

Electrical potentials were recorded from different levels within the skate retina. Comparing the adaptive properties of the various responses revealed that the isolated receptor potential and the S-potential always exhibited similar changes in sensitivity, and that the b-wave and ganglion-cell thresholds acted in concert. However, the two sets of responses behaved differently under certain conditions. For example, a dimly iluminated background that had no measurable effect on the senitivities of either of the distal responses, raised significantly the thresholds of both the b-wave and the ganglion cell responses. In addition, the rate of recovery during the early, "neural" phase of dark adaptation was significantly faster for the receptor and S-potentials than for the b-wave or ganglion cell discharge. These results indicate that there is an adaptive ("network") mechanism in the retina which can influence significantly b-wave and gaglion cell activity and which behaves independently of the receptors and horizontal cells. We conclude that visual adaptation in the skate retina is regulated by a combination of receptoral and network mechanisms.

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