Lecture+12_Temporal_S

Lecture+12_Temporal_S - Temporal Lobes Read in Phantoms Ch...

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Temporal Lobes Read in “Phantoms”: Ch 8-10
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Review Questions 1. What are the anatomical boundaries of the temporal lobes? 2. List the subdivisions of the temporal lobes. 3. What are the 5 connections of the temporal lobes? What functions are they associated with? 4. What is biological motion & which area of the temporal lobe is associated with it? 5. What do the Thatcher Illusion & split-faces test tell us about facial recognition? 6. Name the 9 main effects of temporal lobe damage.
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Temporal Lobes: Outline I. Neuroanatomy II. Connections III. Theory of function IV. Damage
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I. Anatomy of the Temporal Lobes Tissue below the Sylvian Fissure and anterior to the occipital cortex Subcortical Temporal Lobe Structures Limbic cortex Amygdala Hippocampal Formation
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I. Subdivisions of the Temporal Cortex Lateral surface Auditory areas Ventral Stream of Visual Information Insula Area under Sylvian Fissure Gustatory Cortex Auditory association cortex Multimodal Cortex or Polymodal Cortex Area under Superior Temporal Sulcus Receives input from auditory, visual, and somatic regions
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II. 5 Main Connections of the Temporal Lobes 1. Hierarchical sensory pathway : primary & secondary auditory & visual information lateral temporal ctx temporal pole medial temporal lobe Visual through inferiortemporal gyrus & auditory through superior temporal gyrus Stimulus recognition; “familiarity” feeling 1. Dorsal auditory pathway : connects to posterior parietal ctx ; location of sounds in space, orientation & purposeful movement 2. Polymodal pathway : hierarchical sensory pathway STS neurons ; categorizing stimuli 3. Medial temporal pathway : auditory & visual areas limbic structures ; memory & emotion 4. Frontal lobe projection : posterior temporal ctx dorsolateral pfc ; anterior temporal ctx orbitofrontal ctx ; planning
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Lateral (sylvian) fissure somatosensory association areas Primary Auditory cortex Temporal pole ( anterior region of temporal lobe ) 1. Hierarchical sensory pathway Posterior Perspective Note : concept of association cortex is
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