Lobes Flashcards
what are the features of the frontal lobe
generates novel strategies and has executive functions.
It enables self-criticism and trying again
what does the prefrontal cortex do
connects extensively to other association cortices, basal ganglia, limbic system, thalamus and hippocampus
what does the orbitofrontal cortex respond to
response to primitive stimuli (hunger, thirst, sexual function)
damage causes disinhibition
what does the Dorsolateral prefrontal cortex do
response to external stimuli (executing work resposnibilities)
what does Cingulate gyrus and dorsomedial frontal lobe do
motivation
damage causes a lack of will
what are some signs of frontal lobe dysfunction
Personality dysfunction
Paraparesis
Paratonia
Grasp reflex
Frontal gait dysfunction (magnetic gait)
Cortical hand
Seizures
Incontinence
Visual field defects (anterior visual pathway incl optic chiasms are beneath frontal lobe)
Expressive dysphasia (Broca’s area is in the dominant frontal lobe)
Anosmia (olfactory pathway is beneath frontal lobes)
what are signs of temporal lobe dysfunction
Memory dysfunction Agnosia Language disorders Visual field defects (congruous upper homonymous quadrantanopia) Auditory dysfunction Limbic dysfunction Temporal lobe epilepsy
why do you get auditory dysfunction sometimes if the temporal lobe is damaged
Heschl’s gyrus is part of the temporal lobe and contains the primary auditory cortex (Brodmann area 41)
what signs would you get of a parietal lobe dysfunction
Visual field defect (congruous lower homonymous quadrantanopia) Sensory dysfunction Gerstmann’s syndrome Dyspraxia Inattention Denial
what is Gerstmann’s syndrome
disease of the dominant angular gyrus, part of the inferior parietal lobe
Dysgraphia, left-right disorientation, finger agnosia, acalculia
what part is damaged in the parietal lobe to cause inattention
non-dominant angular gyrus
