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Related Concept Videos

Bipolar Disorder01:30

Bipolar Disorder

Bipolar disorder is a chronic mental health condition marked by significant mood fluctuations, including episodes of mania and depression. Elevated energy levels, heightened mood or irritability, impulsive behavior, reduced sleep needs, rapid speech, racing thoughts, inflated self-esteem, and distractibility characterize mania. Individuals with bipolar disorder often alternate between depressive and manic states, with periods of emotional stability lasting an average of six months to a year.
Attention-Deficit/Hyperactivity Disorder01:30

Attention-Deficit/Hyperactivity Disorder

Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings.
Lateralization01:28

Lateralization

Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
Association Areas of the Cortex01:21

Association Areas of the Cortex

Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...

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Related Experiment Video

Updated: May 9, 2026

Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)
10:02

Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)

Published on: March 12, 2020

Right fronto-parietal dysfunction underlying spatial attention in bipolar disorder.

Pablo Najt1, Ulrike Bayer, Markus Hausmann

  • 1Department of Psychology, Durham University, South Road, Durham, DH1 3LE, United Kingdom.

Psychiatry Research
|August 7, 2013
PubMed
Summary
This summary is machine-generated.

Bipolar disorder (BD) patients show atypical visuospatial attention, specifically lacking the typical leftward bias seen in healthy individuals. This suggests potential dysfunction in the right fronto-parietal cortex in those with BD.

Keywords:
Bipolar disorderFunctional cerebral asymmetriesVisuospatial attention

Related Experiment Videos

Last Updated: May 9, 2026

Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)
10:02

Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)

Published on: March 12, 2020

Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Psychology

Background:

  • The neural basis of bipolar disorder (BD) remains unclear.
  • Research implicates the right fronto-parietal cortex in BD.
  • Atypical functional cerebral asymmetries may affect visuospatial attention in BD.

Purpose of the Study:

  • To investigate functional cerebral asymmetries in visuospatial attention in euthymic BD patients.
  • To test the hypothesis that BD affects the right fronto-parietal cortex.

Main Methods:

  • Comparison of euthymic BD patients and healthy controls using the visual line-bisection task.
  • Assessment of line bisection performance (absolute and directional bias) based on hand use and line position.

Main Results:

  • Healthy controls exhibited a typical pseudoneglect (leftward bias) effect, stronger with the left hand.
  • Euthymic BD patients showed no significant difference in absolute bias (accuracy) compared to controls.
  • BD patients displayed atypical directional bias, not deviating significantly from the center with either hand.

Conclusions:

  • Euthymic BD patients demonstrate atypical functional cerebral asymmetry in visuospatial attention.
  • Findings support the hypothesis of right fronto-parietal cortex dysfunction in bipolar disorder.