DR Medhat MRCP

Posterior cerebral artery
Artery Areas supplied Normal function of the area Effect (C/P) of stroke
1. Visual cortical sensory area &
visual associative area
(17,18,19).
2. Thalamus ,subthalamus,
hypothalamus & basal ganglia
3. Cerebral peduncle & midbrain
including Cr3 nucleus
Perception of vision from
contralateral temporal &
ipsilateral nasal visual field
Recognition & recall of visual
images
Sensory relay of all contralateral
sensations tracts (except
olfaction) in thalamus.
Control of voluntary movement
(basal ganglia & subthalamus)
Motor fibers from the motor
areas of the brain project into the
cerebral peduncle then project to
various thalamic nuclei
4. Splenium of corpus callosum Communicates the
somatosensory informations ()
the 2 halves of cerebral
hemispheres
o Contralateral homonymous hemianopia
with macular spare.
o Visual agnosia (in left sided lesion).
o Thalamic syndrome :
- Contralateral sensory loss (hemianaesthesia)
- Thalamic pain in the hemi-anaesthetic
side.
o Chorea or hemiballismus.
o Weber`s syndrome :
- Occulomotor nerve palsy.
- Contralateral hemiplegia.
o Disconnection syndrome.
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