Strokes
Anterior Cerebral Artery (ACA)
o Stroke damages motor and sensory cortices
o Contralateral LL weakness
o Contralateral loss of sensation in LL
o Urinary Incontinence
Middle Cerebral Artery (MCA)
o Stroke damages motor and sensory cortices
o Affects UL and face – contralateral deficits
o Dominant Hemisphere (L) affected
Aphasia
Infarct in Superior division – Broca’s Aphasia, frontal lobe
Infarct in Inferior division - Wernicke’s Aphasia, temporal
lobe
Superior Quadrant Visual Defect
o Nondominant Hemisphere (R) affected
Hemineglect
Posterior Cerebral Artery (PCA)
o Damages occipital lobe - Visual cortex deficits
o Contralateral Hemianopia with Macular Sparing
o Alexia (unable to read) without Agraphia
Unable to read but can write
o Prosopagnosia
Lenticulostriate Artery – penetrating branches of MCA
o Supplies – striatum (putamen + caudate), IC
o Arteries are affected by lacunar infarcts
o Infarcts are caused by HTN (unmanaged)
Pure motor (hemiparesis) or sensory loss (NEVER BOTH)
Contralateral symptoms
NO CORTICAL SIGNS
Anterior Inferior Cerebellar Artery (AICA)
Anterior Cerebral Artery (ACA)
o Stroke damages motor and sensory cortices
o Contralateral LL weakness
o Contralateral loss of sensation in LL
o Urinary Incontinence
Middle Cerebral Artery (MCA)
o Stroke damages motor and sensory cortices
o Affects UL and face – contralateral deficits
o Dominant Hemisphere (L) affected
Aphasia
Infarct in Superior division – Broca’s Aphasia, frontal lobe
Infarct in Inferior division - Wernicke’s Aphasia, temporal
lobe
Superior Quadrant Visual Defect
o Nondominant Hemisphere (R) affected
Hemineglect
Posterior Cerebral Artery (PCA)
o Damages occipital lobe - Visual cortex deficits
o Contralateral Hemianopia with Macular Sparing
o Alexia (unable to read) without Agraphia
Unable to read but can write
o Prosopagnosia
Lenticulostriate Artery – penetrating branches of MCA
o Supplies – striatum (putamen + caudate), IC
o Arteries are affected by lacunar infarcts
o Infarcts are caused by HTN (unmanaged)
Pure motor (hemiparesis) or sensory loss (NEVER BOTH)
Contralateral symptoms
NO CORTICAL SIGNS
Anterior Inferior Cerebellar Artery (AICA)
