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Related Concept Videos

Dementia l: Introduction01:22

Dementia l: Introduction

Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

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.
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...
Cognitive Development During Adulthood01:30

Cognitive Development During Adulthood

Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the cerebellum's...
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Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...

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Related Experiment Video

Updated: Jul 18, 2026

Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
07:30

Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions

Published on: April 23, 2021

Cognitive function following stroke and vascular cognitive impairment.

Edward H de Haan1, Gudrun M Nys, Martine J Van Zandvoort

  • 1Experimental Psychology, Helmholtz Institute, Utrecht University and Department of Neurology, University Medical Centre, Utrecht, The Netherlands. e.dehaan@fss.uu.nl

Current Opinion in Neurology
|November 15, 2006
PubMed
Summary

Cognitive impairment after stroke is complex, influenced by lesion location, diffuse brain dysfunction, and patient factors. Modern neuropsychological assessments improve understanding and treatment of these vascular cognitive impairments.

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Last Updated: Jul 18, 2026

Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
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Dual-Task Stroop Paradigm for Detecting Cognitive Deficits in High-Functioning Stroke Patients

Published on: December 16, 2022

Area of Science:

  • Neuroscience
  • Neurology
  • Cognitive Science

Background:

  • Vascular dementia and related concepts may oversimplify the complex cognitive sequelae of cerebrovascular disease.
  • A nuanced understanding is crucial for effective patient management and research.

Purpose of the Study:

  • To critically evaluate the conceptualization of cognitive impairment following stroke and vascular cognitive impairment.
  • To propose a more detailed framework for understanding post-stroke cognitive deficits.

Main Methods:

  • Review of existing literature on cognitive outcomes after stroke.
  • Analysis of factors influencing cognitive status post-cerebrovascular events.

Main Results:

  • Cognitive and emotional outcomes post-stroke depend on lesion localization, diffuse neuronal dysfunction, and patient-specific variables (age, sex, premorbid function, comorbidity).
  • Focal damage causes selective impairments; diffuse dysfunction leads to decreased mental speed, memory issues, and executive dysfunction.
  • Patient factors significantly modulate the severity of cognitive deficits.

Conclusions:

  • Modern neuropsychological assessment tools are vital for characterizing stroke-related cognitive impairments.
  • Detailed assessment facilitates patient categorization for targeted therapeutic interventions and development of prognostic models.