PS267 Lecture Notes - Lecture 12: Attentional Control, Sensory Cortex, Receptive Field
Document Summary
Lecture 12 attention part 2: the anatomy of attention, the neuropsychology of attention, models of attention, neural mechanisms of attention, attentional control networks. Neural mechanisms of attention: erp study attention can modulate the amplitude of the p1 sensory-evoked wave. Negativity peak @ 180ms: supports early-selection model, study. Participants told to look @ +, attention either directed r or l, to find if attention was directed there before the target appeared or not: voluntary spatial attention: cortical effects. Single-cell recording study with monkeys showed activity of single v4 neuron is modulated by spatial attention. Looks at how spatial attention affects firing of individual neurons in v4. Study: neuron prefers red horizontal bars over green vertical: responded stronger to its preferred stimulus fmri study with humans selective spatial attention. Study: arrow directs attention to side of screen, in 8s checker board flashes, must tell if any squares on r side go grey.
