NBB 302 Chapter Notes - Chapter 13.5: Inferior Frontal Gyrus, Frontal Lobe, Evoked Potential
22 Apr 2018
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Driver-- how disruption of frontal affected processing in posterior cortex. Goal rep and inhibition and enhancement of working memory representations. Knight, grabowecky: recorded evoked potentials in patients with localized neurological disorders: responses attenuated in patients with lesions in temporoparietal cortex, tissue loss in region generating evoked signal. Frontal lobe lesions -- enhanced evoked responses: loss of inhibitory control, control : attended stimulus --> greater evoked response. Lesioned : unattended stimulus --> heightened response as well: enhancement and suppression effect, older ppl -- only enhancement effect. Tms on inferior frontal cortex attenuated modulation of category-specific responses in posterior cortex due to participants" attentional set. Tms --| ability to ignore irrelevant stimuli; little effect on ability to attend to relevant stimuli. Tms on dpfc --> increased bold in task-relevant areas when distractors present. Anderson -- active repression involves another form of goal-based control.
