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Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.

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Dual-Task Stroop Paradigm for Detecting Cognitive Deficits in High-Functioning Stroke Patients

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Emotional incontinence and executive function in ischemic stroke: a case-controlled study.

W K Tang¹, Yangkun Chen, Wynnie W M Lam

¹Department of Psychiatry, Chinese University of Hong Kong, Hong Kong SAR, China. tangwk@cuhk.edu.hk

Journal of the International Neuropsychological Society : JINS

|January 9, 2009

Summary

Poststroke emotional incontinence (PSEI) is linked to frontal and basal ganglia infarcts. Patients with PSEI showed more brain lesions and executive dysfunction, suggesting a neurological basis for emotional dysregulation after stroke.

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Area of Science:

Neuroscience
Neurology
Clinical Psychology

Background:

Poststroke emotional incontinence (PSEI) is a challenging condition affecting stroke survivors.
Existing theories suggest frontal and basal ganglia infarcts, along with executive dysfunction, play a role in PSEI.
Understanding the neuroanatomical and cognitive correlates of PSEI is crucial for effective management.

Purpose of the Study:

To investigate the association between frontal and/or basal ganglia infarcts and executive function in patients with PSEI.
To determine if patients diagnosed with PSEI exhibit greater prevalence of specific brain lesions and cognitive impairments.
To explore the relationship between the severity of brain infarcts and the degree of executive dysfunction.

Main Methods:

A cohort of 516 Chinese patients with acute ischemic stroke were screened for PSEI three months post-stroke.
39 patients diagnosed with PSEI were compared to 39 matched controls without PSEI.
Neuroimaging (lesion location) and neuropsychological tests (executive functions) were utilized.

Main Results:

The PSEI group demonstrated significantly more frontal and/or basal ganglia infarcts compared to controls.
Patients with PSEI exhibited poorer performance on executive function tests, including the Chinese Frontal Assessment Battery, Stroop Test, and Go-NoGo test.
A moderate positive correlation (r=.420) was found between frontal infarcts and PSEI severity, but no significant correlation between infarcts and overall executive function impairment.

Conclusions:

Frontal and/or basal ganglia infarcts are significantly associated with poststroke emotional incontinence.
Executive dysfunction is also prevalent in patients with PSEI, indicating a complex neurological underpining.
Further research, including functional imaging, is needed to fully elucidate the relationship between brain lesions, executive function, and PSEI.