Analysis of visual information in lamina neurones of the fly
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説明
1. Spike discharges accompanying slow electrical deflections were extracellularly recorded from the plexus between the lamina and medulla of the optic lobe of the fleshflyBoettcherisca peregrina by means of glass microcapillaries. The eye was stimulated with a spot-like light source, and sometimes a slit of light was used. 2. Elicitation of the spikes was found to be related with the slow electrical deflections. 3. The spike response patterns were used to study the organization of the receptive field, colour sensitivity and movement. 4. From the response to instantaneous flash of a spot of light placed at varying distances from a continuously illuminated conditioned spot of light within the receptive field, the interactions of responses within the receptive field were elucidated, and in particular the lateral inhibitory and excitatory processes were clearly demonstrated. It was assumed that the latter processes were due to the disinhibition of the lateral inhibitory processes. 5. The contributions of the activities of the lamina neurones demonstrated here to movement detection are discussed.
収録刊行物
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- Journal of Comparative Physiology
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Journal of Comparative Physiology 88 335-372, 1974-01-01
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