Opening our eyes on waking from
a dreamless sleep, the immediacy and directness of conscious experience
belies the complexity of the underlying neural mechanisms, which
remain incompletely understood. My talk will both review recent
empirical studies of neural correlates of visual awareness in
humans, and reflect on the relationship of this work to preceding
plenary talks and symposia in ASSC-8. I will review experimental
findings that complement previous behavioral, neuropsychological
and electrophysiological work by suggesting that activity in functionally
specialized areas of ventral visual cortex is necessary for visual
awareness. However, more recent studies suggest that activity
in ventral occipital and temporal cortex is not sufficient to
support conscious vision without a contribution from parietal
and prefrontal areas. Such a contribution may reflect processes
such as selective attention and working memory. Reciprocal interactions
between parietal and ventral visual cortex may thus serve to selectively
integrate internal representations of visual events in the broader
behavioral context in which they occur. Such network interactions
may account for the richness of our experience, and provide a
fundamental neural substrate for conscious visual awareness.