PSYC 330 Lecture Notes - Lecture 8: Diffuse Axonal Injury, Diffusion Mri, White Matter

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Mostly talking about parietal cortex: especially regarding spatial attention. Critical brain areas: reticular activating system (ras, early candidate for the origin of attention or specific area for attention , superior colliculus, progams ciccadic eye movements. Important for attention shifts: pulvinar, attention focusing (selective attention, anterior cingulate cortex, parietal cortex, frontal cortex. Posner task: anyone can do it, adults, children, animals. Subcortical brain areas: thalamus, superior colliculus, pulvinar nucleus. Attention-related neurotransmitters: dopamine (parkinson"s, serotonin (70-90% is made in the gut, norepinephrine. Thiamine deficiency disrupts superior colliculus and ior: those with this disease don"t exhibit ior, patient lost eye movements, as a result, ior as well. Thalamus: gateway between the subcortex and cortex, all sensory and perceptual info passes through the thalamus initially, lesioned thalamus causes difficulties in paying attention (in monkeys) Occipital cortex: first studies used erp. Parietal cortex and spatial attention: parts of parietal cortex on slide on canvas, somatosensory cortex. Psp patients have more trouble with direct cues.

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