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Related Experiment Videos

Basal forebrain infarction. A clinicopathologic correlation.

S Phillips1, V Sangalang, G Sterns

  • 1Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.

Archives of Neurology
|November 1, 1987
PubMed
Summary
This summary is machine-generated.

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Aneurysm repair led to memory loss and apathy due to brain damage in specific areas. This case highlights the complex relationship between brain structures and cognitive functions after injury.

Area of Science:

  • Neuroscience
  • Neurology
  • Neurosurgery

Background:

  • Anterior communicating artery (ACoA) aneurysms are cerebrovascular lesions often requiring surgical intervention.
  • ACoA aneurysm rupture can lead to significant neurological deficits, including cognitive impairment.

Observation:

  • A patient developed severe anterograde amnesia, apathy, loss of volition, altered arousal, and partial diabetes insipidus post-ACoA aneurysm repair.
  • Postmortem examination revealed bilateral destruction in the septal gray, nucleus accumbens, and diagonal band of Broca.
  • Lesions also affected the anterior limb of the internal capsule, globus pallidus, and paraventricular hypothalamic gray with microinfarcts.

Findings:

  • Bilateral septal region and basal forebrain damage correlated with profound anterograde amnesia and apathy.

Related Experiment Videos

  • Hypothalamic microinfarcts may have contributed to the observed partial diabetes insipidus.
  • Neuropsychological deficits persisted despite long-term desaminoarginine vasopressin therapy.

    • Implications:

    • This case underscores the critical role of the septal gray, nucleus accumbens, and diagonal band of Broca in memory, volition, and arousal.
    • Understanding these specific neuroanatomical correlates is crucial for predicting and managing cognitive deficits after ACoA aneurysm surgery.
    • The findings emphasize the limited efficacy of vasopressin analogs in reversing established amnesic syndromes linked to specific brain lesions.