Functional Anatomy Of Cortex Flashcards
Agnosia
Lack of knowledge- cannot name a pen
How many neurones in the cortex?
10 billion
Visual agnosia
Can’t identify objects- the man who mistook his wife for a hat
Frontal lobe damage/trauma causes…
Disinhibition
Personality changes
Toilet brush man
Where is Broca’s area?
Left side if frontal lobe- posterior
What allows us to produce language?
Broca’s area- in the left hand side
Why area of he brain does Pick’s disease affect?
The frontal lobe
Frontal cortex fuctions
Programming/ planning of sequences of behaviour Voluntary eye movements Response inhibition Attention Memory Problem solving Motor control
Functions of temporal lobe
Auditory Olfactory Visual Memory Emotional & social
What is capgras syndrome?
Problems with visual association
Think people are impostors
Emotional reactivity is not working correctly
What is prosopagnosia?
Inability to recognise faces
Function of amygdala
Processes emotional behaviour
Why happens if you remove the hypocampus bilaterally?
Severe anterograde amnesia
Cannot remember new info after surgery
Graded retrograde amnesia- prior to lesion
What is seen in the brain of end stage altzeimer’s patients?
Shrunken cortex
Enlarged ventricles
Absent hypocampus
What is Benson’s syndrome?
Visual agnosias
Problems with depth perception
Alexia (inability to perceive written word/Dyslexia)
What artery is not commonly effected by stroke?
MCA
What happens in Wernicke’s receptive dysphasia?
Cannot understand speech
What is Asomatognosia?
Lack of awareness of body parts
Lady creaming thinking someone had left a leg in her bed- it was her bed
What is autotopagnosia?
Inability to name body parts
Foot, foot, foot
What is Anosognosia?
Denial of illness
What is visual neglect?
When only half face is redrawn
Blind contra lateral to lesion
Name the 5 areas if the occipital cortex
V1-V5
Function of V1 of occipital cortex
Segregates pattern vision from motion signals
What is blind sight?
Blind person can point to lights
Damage to V1
What does Wernicke’s area allow you to do?
Allows you to understand spoken speech
