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Related Concept Videos

Long-term Depression01:05

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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.
Depression: Overview01:18

Depression: Overview

Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...
Depressive Disorders: Etiology01:27

Depressive Disorders: Etiology

Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
Biological Factors in Depression
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Stroke: Introduction and Types01:29

Stroke: Introduction and Types

A stroke is an acute neurological event caused by the sudden disruption of cerebral blood flow, leading to rapid loss of neuronal function. Neurons depend on continuous oxygen and glucose supply, so even brief interruptions can cause irreversible injury within minutes. Strokes are classified into ischemic and hemorrhagic types.Ischemic StrokeIschemic strokes are most common and occur due to arterial occlusion, depriving brain tissue of oxygen and nutrients. This leads to energy failure, ionic...
Depressive Disorders: MDD and Dysthymia01:27

Depressive Disorders: MDD and Dysthymia

Depressive disorders are a group of mental health conditions characterized by pervasive feelings of sadness, diminished pleasure in life, and a significant impact on daily functioning. These conditions are most prevalent in individuals during their 30s and affect women at twice the rate of men. Contrary to popular belief, younger individuals are generally more susceptible to these disorders than older adults. Two key types of depressive disorders include Major Depressive Disorder (MDD) and...

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Related Experiment Video

Updated: Jun 20, 2026

A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats
04:38

A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats

Published on: May 22, 2019

Post-stroke depression: Diagnosis and incidence.

G Andersen

    European Psychiatry : the Journal of the Association of European Psychiatrists
    |August 25, 2009
    PubMed
    Summary

    Diagnosing post-stroke depression (PSD) is challenging due to cognitive issues. While DSM-III criteria are debated, research shows they effectively diagnose PSD, though prognosis and treatment vary by diagnosis timing.

    Area of Science:

    • Neurology
    • Psychiatry
    • Clinical Psychology

    Background:

    • Post-stroke depression (PSD) diagnosis is complicated by cognitive impairments and mood-behavior dissociation.
    • The Diagnostic and Statistical Manual (DSM)-III criteria for PSD have faced criticism for including non-specific stroke symptoms.

    Purpose of the Study:

    • To evaluate the validity of DSM-III criteria for diagnosing PSD.
    • To investigate whether non-specific somatic symptoms influence PSD diagnosis.
    • To explore differences in prognosis and treatment response based on the timing of PSD diagnosis.

    Main Methods:

    • Compared depressive symptom severity in stroke patients to an age-matched general population sample.
    • Conducted a controlled antidepressant treatment study in unselected PSD patients.

    More Related Videos

    Effect of Yi-Nao-Jie-Yu Prescription on Post-Stroke Depression in Rats using Middle Cerebral Artery Occlusion Combined with Behavioral Restraint
    06:45

    Effect of Yi-Nao-Jie-Yu Prescription on Post-Stroke Depression in Rats using Middle Cerebral Artery Occlusion Combined with Behavioral Restraint

    Published on: January 9, 2026

    Related Experiment Videos

    Last Updated: Jun 20, 2026

    A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats
    04:38

    A Middle Cerebral Artery Occlusion Technique for Inducing Post-stroke Depression in Rats

    Published on: May 22, 2019

    Effect of Yi-Nao-Jie-Yu Prescription on Post-Stroke Depression in Rats using Middle Cerebral Artery Occlusion Combined with Behavioral Restraint
    06:45

    Effect of Yi-Nao-Jie-Yu Prescription on Post-Stroke Depression in Rats using Middle Cerebral Artery Occlusion Combined with Behavioral Restraint

    Published on: January 9, 2026

  • Analyzed prognosis and treatment response in early versus late diagnosed PSD.

    • Main Results:

    • Evaluations failed to provide evidence that non-specific symptoms significantly impact PSD diagnosis using DSM-III criteria.
    • Prognosis and treatment response differ between early and late diagnosed PSD.
    • This suggests PSD diagnosed by DSM-III criteria represents a heterogeneous group.

    Conclusions:

    • DSM-III criteria are effective for diagnosing PSD, despite concerns about non-specific symptoms.
    • The heterogeneity of PSD, indicated by differing outcomes based on diagnosis timing, necessitates further etiological investigation.
    • Understanding these differences is crucial for tailoring treatment and improving patient outcomes.