lec 19 - attention

What two things guide our attention

goals (top down) and stimulus salience (bottom up)

What are four different types of attention

Spatial, feature based, object based, temporal, overt, covert

What’s the difference between overt and covert attention (Overt attention is when… Covert attention is when…)

Overt attention is when your attention is on what you’re fixating. Covert attention is when your attention is different from where you’re looking

Effect of attention on preferred stimulus in RF

Increased activity of sensory neurons, improved target detection and reaction times

Effect of attention on non-preferred stimulus in RF or attention away from RF

reduced activity of neurons, worse target detection and reaction times

Brain areas that guide our attention and provide feedback to sensory cortex (__ network including…)

Fronto-parietal network including FEF, SEF, and PPC (LIP)

Neurons in which brain areas respond well to behaviorally relevant stimuli

FEF and PPC (LIP)

How do frontal and parietal cortex respond to behaviorally relevant stimuli vs irrelevant stimuli (well/poorly to behaviorally relevant stimuli and well/poorly to behaviorally irrelevant stimuli)

well to behaviorally relevant stimuli and poorly to behaviorally irrelevant stimuli

Feedback from parietal cortex increases response in

sensory cortex

Feedback from frontal eye field increases response in

visual cortex

Pulvinar helps

route important information across cerebral cortex

Brain areas involved in eye movements and attention

Fronto-parietal network, subcortical areas, superior colliculus and pulvinar

Neglect (condition where, from damage to, can effect)

condition where patients are not away of one side of space, from damage to PPC, can affect both egocentric and allocentric RF

Brain areas involved in eye movement (saccade) planning (__ neurons respond when saccade is…)

PPC (LIP) neurons respond when saccade is into RF