Lecture 18 Cerebral cortex Flashcards
What are the 3 kinds of gray matter in the cortex?
Granular
Pyramidal
Interneurons
True or false: the cortex has a cellular layer and a purkinje layer
False
What is the major output cell of the cortex?
Pyramid cells
Each layer of the cortex has 6 layers except….
Olfactory and medial temporal corticies, they have 3
True or false: motor and sensory neurons extend down to the sulcus of the gyrus
True
Brodmann’s areas are particularly helpful during __________
Surgical techniques and research (measure cortical activity)
Primary somatosensory cortex -> Secondary somatosensory cortex -> _______________________ -> _____________________ -> Primary motor cortex
Association cortex
Motor planning areas
what part of the cortex sends descending motor signals?
Primary motor cortex
What part of the corticies differentiates intensity and qualities of sensory info?
Primary sensory cortex
What part of the cortex handles more complex sensory processing/ recognition of sensations
secondary sensory cortex
Where is the primary somatosensory cortex found?
Postcentral gyrus
Where is the auditory cortex found?
Within lateral fissure and superior temporal lobe
What cortex is found within calcarine sulcus and adjacent gyri
visual cortex
What cortex is found within posterior end of lateral fissure and parieto-insular cortex
Vestibular cortex
Which part of the visual cortex analyzes color and movements?
Secondary visual cortex
The secondary visual cortex projects to the _____________ to guide visual fixation keeping item in central vision
superior colliculus
what cortex constrasts sounds heard from memories and categorizes them?
Secondary auditory cortex
vast collection of cell bodies, axons and dendrites covering the surface of the cerebral hemispheres
cerebral cortex
-goal selection,planning monitoring
-interpretation of sensation
-emotions, memory processing
which functional category of cerebral cortex is this?
association cortex
which functional category of cerebral cortex is this?
movement composition, sequencing
motor planning areas
what receives sensory info from thalamic nuclei
primary somatosensory cortex
primary sensory cortex discriminates among different intensities and qualities of sensory input all but?
-somatosensory
-auditory
-visual
-vestibular
OLFACTION does not go thru thalamus
what discriminates shape, texture, and size of objects
primary somatosensory cortex
what is conscious discrimination of loudness and pitch of sounds (intensity of sounds)
primary auditory cortex