NEU258_Lecture2_Neurons_Membranes1 notes

NEU258_Lecture2_Neurons_Membranes1 notes - Lecture 2...

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Lecture 2 -... Audio recording started: 11:01 AM Tuesday, September 18, 2012 Non- mammals don’t have cerebral cortexes Cerebral cortex: Cortex is the sheet of cell bodies that inhabit the outer part of the brain Space in brain is cabling (white matter) Coronal section is parallel to the face The grey matter is the place where computations are performed (cells hooked to each other in intricate ways) Different view of the cortex: See Diagram 1 (Looks like this with many more labels): Cerebral cortex is divided into 4 different lobe Names of the cortex parts are named after the bone plates that protect the skull Through eye into the thalamus into the cortex Vision is the best understood sense It continues into the temporal lobe It continues up into the parietal lobe Huge sector of the cortex deals with vision Visual processing is carried out in a large set of visual areas of the brain "What" visual stream - deals with what you are looking at "where" stream deals with where you're looking at Deals with metric, spatial physical information "how" stream deals with the shape, and orientation of things Back is more related to vision/hearing, whereas the anterior system is related to touch Hearing comes form the auditory cortex (see diagram 1) Lateral sulcus divides the temporal lobe from the rest of the brain Some are shared between humans and monkeys whereas some are unique to some There is also a central sulcus Axons come out from the motor cortex to the spinal cord and control movement It deals with cognition (very cognitive) There is a prefrontal cortex (in front of the frontal lobe) First cortical area to be discovered was the top part (the part that controls body movement/actions) Next was the visual cortex Lecture 2 - Neurons and membranes I Tuesday, September 18, 2012 11:00 AM NEU 258 - Fundamentals of Neuroscience Page 1
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Tan's (French Patient) Broca's area was damaged - preventing him from speaking The early localization of the cortex was around Broca's area Next was the visual cortex Speech will sound like babbling If Wernicke's area is damaged, you won't be able to understand speech The frontal areas deals more with movement and actions as well as speaking (more output than input) Posterior parts of the brain deal more with input rather than output FEF = frontal eye field Information regarding the cortex
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  • Fall '11
  • Graziano
  • myelin sheath, cell bodies

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