known responses in the visual system to show typical adaptation properties. This suggests that the site of visual adaptation may be in the bi-polarcell layer, the presumed locus of b-wave generation. Recent electron microscopic studies have demonstrated reciprocal synapses between the bipolar terminals and amacrine processes, and it is suggested that such a ;synaptic arrangement could account for visual adaptation by a mechanism of inhibitory feedback on the bipolar cells. known responses in the visual system to show typical adaptation properties. This suggests that the site of visual adaptation may be in the bi-polarcell layer, the presumed locus of b-wave generation. Recent electron microscopic studies have demonstratedreciprocal synapses between the bipolar terminals and amacrine processes, and it is suggested that such a ;synaptic arrangement could account for visual adaptation by a mechanism of inhibitory feedback on the bipolar cells.

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