direkt zum Inhalt springen

direkt zum Hauptnavigationsmenü

Sie sind hier

TU Berlin

Inhalt des Dokuments

All Publications

Spike-Frequency Adaptation as a Mechanism for Dynamic Coding in V1
Citation key Schwabe2001
Author Schwabe, L. and Adorjan, P. and Obermayer, K.
Pages 38 – 40, 351 – 358
Year 2001
DOI 10.1016/S0925-2312(01)00436-2
Journal Neurocomputing
Publisher Elsevier
Abstract We investigate the representation of visual stimuli and the short-term dynamics of activity within primary visual cortex in a \?free-viewing\" scenario with \?saccading ey movements\? odeled asa series of visual stimuli tht are flashed onto theretina for the duration of a fixation period (200-300ms). We assume that t entire activity pattern from the beginning of fixation until the time t onstitutes the neural code. Given a noisy (Poissonian) representation t fllows that the signal-to-noise ratio increases with time, because more spikes becoe availablefor representation. Here, we show tha for achieving an optimal stimulus representtion in ny increasing time-window beginning with stimulus onset, the procesing strategy of the network should be dynamic in the sense that an initially high recurrent cortical competition between orientationselective cells attenuateswith ime, i.e. mediated by the intrinsic property of spike-frequency adaptation of pyramidal cels.
Link to publication Link to original publication Download Bibtex entry

Zusatzinformationen / Extras

Quick Access:

Schnellnavigation zur Seite über Nummerneingabe

Auxiliary Functions