Endogenous attention to object features modulates the ERP C1 component.

Converging neuroimaging and electrophysiological evidence supports the notion that selective attention can modulate neural activity not only in V1 (BA17)-as early as 40-60 ms post-stimulus-but also at the subcortical level (thalamic lateral geniculate nucleus, LGN). V1 modulation has been documented both in space-based and (especially) object-based selection conditions, most of all in endogenous orienting paradigms. It seems then that an attentional modulation of the ERP C1 response-reflecting V1 modulation-would not be especially favoured by exogenous cuing as far as object-based attention is concerned.