Anatomy Test 1 - Lecture 12.docx

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Department
Anatomy and Cell Biology
Course
Anatomy and Cell Biology 3319
Professor
Michele Barbeau
Semester
Winter

Description
­ most people have language function localized on left side ­ unable to produce sounds, what lesion of the brian is involved in that ­ impairment of sensory information with regards to touch and sensation o primary somatosensory cortex (postcentral gyrus) ­ learned movements ­ ideomotor region in parietal lobe o where info comes in o where you generate idea that you want to make a movement o lesion results in inability to initiate idea that you want to move ­ gait apraxia o planning movement o ie. Walking o secondary motor region o inability to form motion of walking ­ receptive aphasia o wernickes area o inability to understand what we are actually saying ­ executive aphasia o in brocas area o cant formulate what you want to say, wont come out fluently ­ regions in cerebral cortex communicate with each other to produce behaviours ­ complex interconnections ­ association fibers o fibers that connect parts of cerebral cortex ipsilaterally o short – adjacent gyri, within same lobe, etc.  info coming into primary somatosensory cortex, and then goes to  association somatosensory cortex o long – going from lobe to lobe  ipsilaterally  ­ commissural fibers o corpus callosum o some smaller ones (anterior and posterior CF)   anterior – connecting temporal lobes ­ projection fibers o information leaving cerebral cortex ­ projection fibers ­ corona radiata –  ­ internal capsule o tight band wrapped around thalamus o fibers fan out in cortex  called corona radiate ­ homunculus map ­ in internal capsule its tight, but organized in topographical region ­ internal capsule has own organization for sensory info ­ diagram shows lines where some of them are located ­ no new info ­ don’t need to know pathways ­ what region of brain ­ to recognize ­ dorsal stream  o spatial information ­ ventral stream o what pathway o see faces, tells you that they are students faces o ­ spatial perception on right side ­ language on left side ­ what structures to raise right hand?
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