NEUR30003 Lecture Notes - Lecture 28: Lateral Sulcus, Auditory Cortex, Frontal Lobe
13 Aug 2020
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24+ months: language develops rapidly into complete sentences. Broca"s area: motor-associated area for muscles controlling speech production. Hearing spoken language - auditory cortex involved. Language interpreted as meaning wernicke"s area: aphasia no fluency, doesn"t mean anything. Broca"s area is left lateral frontal lobe. Wernicke"s area left side as well. Left hemisphere has more area dedicated to certain regions. Auditory cortex is just below the sylvian fissure. Left side has more language function and more cortical area devoted to sound processing: order words in sentence, semantics what it means. Right side does work in affective components of language: tone, emotion (person"s disposition) Written word or sign (spatial information) visual cortex sends info (object ventral stream) -> higher visual centres (extrastriate cortex) Speech -> auditory processing auditory cortex. Wernicke"s area: info comes together to identify what the sentence means. Motor control in broca"s area through primary motor cortex. Hearing words: primary auditory cortex wernicke"s area starting to interpret (red)
