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Related Concept Videos

Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...

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Related Experiment Video

Updated: May 26, 2026

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Behavioral disinhibition in stroke.

Wai Kwong Tang1, Edward Hui1,2, Thomas Wai Hong Leung3

  • 1Department of Psychiatry, Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China.

Frontiers in Neurology
|March 19, 2024
PubMed
Summary
This summary is machine-generated.

Post-stroke behavioral disinhibition (PSBD) is often undiagnosed, impacting rehabilitation. This study investigates PSBD correlates and course using MRI, aiming to improve understanding and treatment for stroke survivors.

Keywords:
MRIanterior temporal lobebehavior disinhibitioncaudateprefrontal cortexstrokethalamus

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Area of Science:

  • Neurology
  • Neuroimaging
  • Behavioral Science

Background:

  • Post-stroke behavioral disinhibition (PSBD) is a common yet often overlooked condition in stroke survivors, characterized by impulsive or inappropriate behaviors.
  • Undiagnosed PSBD can prolong rehabilitation stays, highlighting the need for better understanding and diagnostic tools.
  • Current research lacks comprehensive investigation into the neuroimaging correlates and longitudinal course of PSBD.

Purpose of the Study:

  • To evaluate the clinical, neuropsychological, and magnetic resonance imaging (MRI) correlates of PSBD in a cohort of stroke survivors.
  • To describe the 12-month clinical course of PSBD in individuals following a stroke.
  • To identify specific brain lesion locations associated with the development and persistence of PSBD.

Main Methods:

  • A prospective cohort study involving 237 stroke patients, with assessments at 3, 9, and 15 months post-stroke.
  • Utilized advanced MRI techniques, including diffusion-weighted imaging, within one week of stroke onset.
  • Employed the Frontal Systems Behavior Scale (FrSBe) for PSBD assessment, with logistic regression and covariance analysis to identify lesion correlates and track changes.

Main Results:

  • This study is the first MRI investigation specifically focused on PSBD in stroke survivors.
  • Preliminary findings aim to elucidate the association between lesions in the orbitofrontal cortex, anterior temporal lobe, and subcortical structures with PSBD risk.
  • The research will provide data on the demographic, clinical, and MRI variables differentiating between PSBD remitters and non-remitters over 12 months.

Conclusions:

  • This research will significantly advance the understanding of PSBD's pathogenesis and clinical trajectory following stroke.
  • Findings are expected to inform clinical practice for managing behavioral changes in stroke survivors.
  • The study aims to provide a foundation for future research into PSBD and related conditions in broader neurological populations.