Eye dominance and response latency in area V1 of the monkey.
We measured the latency of 35 cells from V1 in two rhesus monkeys, to dynamic random dot stimuli monocular and binocularly presented. Mean latencies after non-dominant eye stimulation (97.9 ms) were longer than those for dominant eye (78.2 ms) and binocular (70.7 ms) stimulation. Differences between latencies for dominant eye and binocular stimulation were not statistically significant. For dominant eye, there was a significant statistical correlation between dominance strength and latency (R = -0.36; p = 0.03). We failed to find significant statistical differences between latencies for cells with temporal and nasal dominant receptive-field. We conclude that, in V1, the response latency is largely determined by the dominant eye, whereas interocular interactions do not seem to play a relevant role regarding response latency.
Romero
Maria C
MC
Department of Physiology, School of Medicine, Universidad de Santiago de Compostela, Santiago de Compostela, Spain. fsmela@usc.es
Castro
Adrian F
AF
Bermudez
Maria A
MA
Perez
Rogelio
R
Gonzalez
Francisco
F
D000818:Animals; D023882:Dominance, Ocular / Q000502:physiology*; D004558:Electric Stimulation; D004594:Electrophysiology; D005403:Fixation, Ocular / Q000502:physiology; D008253:Macaca mulatta; D008839:Microelectrodes; D009474:Neurons / Q000502:physiology; D010775:Photic Stimulation; D015348:Vision, Binocular / Q000502:physiology; D015349:Vision, Monocular / Q000502:physiology; D014793:Visual Cortex / Q000166:cytology / Q000502:physiology*; D014794:Visual Fields / Q000502:physiology