PS267 Lecture 15: Lecture 15 – Attention
Document Summary
Lecture 15 attention fmri study showed attention can operate independent of spatial attention. Study: either face or house is moving back & forth, asked to attend to either face, house, or the one in motion. Therefore attention can be directed to objects regardless of where they are in space. Current models suggest that two separate but interacting cortical systems handle selective attention: dorsal attention network = voluntary attention, ventral attention network = stimulus novelty and salience, dorsal attention network: frontoparietal attention system. The sources of attentional control over spatial attention: a network of dorsal cortical regions showed increased activity when a participant attended and responded to a stimulus, activated w/ voluntary attention. How does the dorsal attention network modulate sensory processing? fmri study found spatially-specific activation in the visual cortex before any stimuli appeared (but after the cue, before target: like attentional priming in the sensory cortex.
