Wspólnotowy Serwis Informacyjny Badan i Rozwoju - CORDIS

Data of behavioural experiments and corresponding spike trains

We recorded neuronal activity from barrel cortex while rats discriminated between a rough and a smooth texture without visual cues. Whiskers moved across both textures with a "stick and slip" behaviour and the spikes of cortical neurons were associated with distinctive kinetic events - high bending angles or the release from bending.

In the 200-ms interval before the animal's decision, spike counts were higher on average on rough trials than on smooth trials, and we propose firing rate as a cortical code for texture coarseness under these conditions. Spike count of a neuronal cluster carried, on average, 0.05 bits of information about the texture, about one-tenth of the information necessary to account for behaviour. The evidence indicates that firing rate is the neuronal substrate for the rats' discrimination of texture.

Reported by

See on map
Śledź nas na: RSS Facebook Twitter YouTube Zarządzany przez Urząd Publikacji UE W górę