Orientation response properties of inhibitory cells in a model of cat primary visual cortex | Zendy

Anton E. Krukowski | Zendy; Kenneth D. Miller | Zendy

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Orientation response properties of inhibitory cells in a model of cat primary visual cortex

Author(s) -

Anton E. Krukowski,

Kenneth D. Miller

Publication year - 2010

Publication title -

journal of vision

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.126

H-Index - 113

ISSN - 1534-7362

DOI - 10.1167/1.3.434

Subject(s) - inhibitory postsynaptic potential , excitatory postsynaptic potential , visual cortex , neuroscience , stimulus (psychology) , lateral geniculate nucleus , population , orientation (vector space) , cortical neurons , physics , psychology , mathematics , geometry , medicine , environmental health , psychotherapist

• “Push-Pull” inhibition counteracts untuned DC from LGN • Achieves contrast invariant orientation tuning for cortical excitatory cells • Inhibitory cells follow tuning of LGN: sum of tuned F1 term and untuned DC term • Correlation-based connectivity derived from developmentally motivated learning rules for intracortical synaptic connections • Excitatory connections between cells with correlated receptive fields: same orientation and same spatial phase • Inhibitory connections between cells with anticorrelated receptive fields: same orienatation and opposite spatial phase • Synaptic depression model follows the model of Abbott et al, 1997. • First spike in a spike train elicits strongest postsynaptic potential • Synaptic strength weakens with each spike in rate dependent manner • Synapses return to full strength with time constant ~ 100 msec

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