Visual latencies in areas V1 and V2 of the macaque monkey
- 1 March 1995
- journal article
- research article
- Published by Maximum Academic Press in Visual Neuroscience
- Vol. 12 (2) , 371-384
- https://doi.org/10.1017/s095252380000804x
Abstract
Latencies to small flashing spots of light were measured in different layers of areas V1 and V2 in anesthetized and paralyzed macaque monkeys. The shortest latencies were found in layers 4Cα and 4B of area V1. Latencies in layer 4Cβ were on average 20 ms longer than those in 4Cα and 4B. The shortest latencies in area V2 were observed in the infragranular layers and they did not differ significantly from those found in the infragranular layers in V1. Similarly, latencies in the supragranular layers of V2 were not significantly different from those measured in the supragranular layers of V1. These results show that, in area V1, neurons of the magnocellular pathway are activated on average 20 ms earlier than those of the parvocellular pathway. Our data also suggest that much processing begins simultaneously in areas V1 and V2.Keywords
This publication has 54 references indexed in Scilit:
- Preface: Cerebral Cortex Has Come of AgeCerebral Cortex, 1991
- Innervation of cat visual areas 17 and 18 by physiologically identified X‐ and Y‐ type thalamic afferents. II. Identification of postsynaptic targets by GABA immunocytochemistry and Golgi impregnationJournal of Comparative Neurology, 1985
- Retinotopic patterns of connections of area 17 with visual areas V‐II and MT in macaque monkeysJournal of Comparative Neurology, 1983
- Anatomical organization of primate visual cortex area VIIJournal of Comparative Neurology, 1981
- Ordinal position and afferent input of neurons in monkey striate cortexJournal of Comparative Neurology, 1980
- Excitatory synaptic ensemble properties in the visual cortex of the macaque monkey: A current source density analysis of electrically evoked potentialsJournal of Comparative Neurology, 1979
- The neurological organization of pathways between the dorsal lateral geniculate nucleus and visual cortex in old world and new world primatesJournal of Comparative Neurology, 1978
- Interlaminar connections and pyramidal neuron organisation in the visual cortex, area 17, of the Macaque monkeyJournal of Comparative Neurology, 1975
- Organization of neurons in the visual cortex, area 17, of the monkey (Macaca mulatta)Journal of Comparative Neurology, 1973
- Laminar and columnar distribution of geniculo‐cortical fibers in the macaque monkeyJournal of Comparative Neurology, 1972