Cerebral Cortex Flashcards
What are the boundaries of the thalamus
A: Interventricular foramen
P: Posterior commisure
L: Internal Capsule
S: floor of the lateral Ventricle
Thalamic Functions
Relay Center
ALL Sensory except olfactory
Control level of cortical Excitability
Influence motivational and Emotional responses
Thalamic Pain Syndrome is a.k.a.
Dejrrine Rousy Syndrome
The last to recover in stroke
fine movements
function of the somatosensory cortex
propioception
Primary Auditory part gyrus
Supratemporal Gyrus (Heschls) 41, 42
Defect in the angular gyrus 39
Dyslexia
Dysgraphia
sypmtoms:Lesion in the supramarginal Gyrus 40
Dyscalcuria
R-L disorientation
Difficulty understanding speech
What is Gertsmann syndrome?
Supramarginal Gyrus 40 symptoms + Angular gyrus lesion: Dyscalcuria R-L disorientation Finger Agnosia Agraphia
Broken speech
Motor aphasia
Expressive aphasia
UNDERSTANDS but can’t articulate
Broca’s Aphasia
Broca’s Area?
Brodmann’s Area 44,45
Wordy
Babbles
Nensensical
Doesnt follow command
Wernicke’s Aphasia
Wernicke’s area?
BA 22
“Language superhighway”
Connects Broca’s and Wernicke’s
Arcuate Fasciculus
Lesion in the arcuate fasciculus
Conductive Aphasia
Projections in the Internal Capsule of the thalamus
Thalamocortical
Corticothalamic
Corticobulbar
corticospinal
Atrophy of the Caudate Nucleus leads to?
Box-Car Ventricles (Huntington’s Disease)
MC site of Hypertension Hemorrage
PUTAMENN!!
Neuroanatomical substrate for drive related and emotional behavior, emotion, Memory
Limbic Association Cortex
Limbic system location
Inner/Bottom surface of the temporal lobe
Important components of the limbic system
Hippocampus
Dentate gyrus
Amygdala
Important role in emotion, learning and memory
Hippocampus
Agression, eating, drinking, sexual behaviors..YOLO
Amygdala
regulates blood levels of glucose, salt, BP and hormones
Hypothalamus
Lesion of this area cause “Sham Rage”
Amygdala
Triple CAG disorder
Huntington’s Disease
Primary motor symptoms of Parkinson’s Disease
Bradykenesia
Symptoms of Parkinson’s disease
bradykenesia
Resting tremors
rigidity - cogwheel or lead pipe
Postural instability
Forms the floor of the 3rd ventricle
Hypothalamus/Hypophysis
Main function of the hypothalamus
Controls ANS 4F's feeding, fighting, fleeing, Reproduction Motivation Memory Temperature regulation Circadian Rythm
Sex Center of the hypothalamus
Anterior
What is Klüver–Bucy syndrome?
is a syndrome resulting from bilateral lesions of the medial temporal lobe (including amygdaloid nucleus).
compulsive eating, hypersexuality, insertion of inappropriate objects in the mouth (hyperorality), visual agnosia, and docility
