Siamese cats: abnormal responses of retinal ganglion cells.
Comparison of optic tract recordings in Siamese and ordinary cats reveals that Siamese cats have a significantly lower percentage of Y-cells than of X-cells. In addition, Siamese cats show depressed responses to a contrast-reversal stimulus, a result that supports the lower spatial contrast sensitivity demonstrated behaviorally by these animals. Both physiological findings suggest neurophysiological anomalies in the Siamese retina.
D000200:Action Potentials; D000818:Animals; D002415:Cats / Q000033:anatomy & histology / Q000502:physiology*; D012160:Retina / Q000166:cytology / Q000502:physiology*; D014785:Vision, Ocular; D014794:Visual Fields