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Related Concept Videos

Integration of Synaptic Events01:28

Integration of Synaptic Events

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Synaptic integration mainly includes the summation of graded potentials. Graded potentials, regardless of their type, cause subtle alterations in membrane voltage, resulting in either depolarization or hyperpolarization. These incremental changes, when combined or summed, can propel the neuron toward its threshold. Consider, for example, a membrane experiencing a +15 mV shift, causing it to depolarize from -70 mV to -55 mV. In this scenario, graded potentials govern the membrane's ability to...
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Attention-Deficit/Hyperactivity Disorder01:30

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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....
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Intellectual Disability01:29

Intellectual Disability

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Intellectual disability (ID) is a neurodevelopmental condition characterized by deficits in intellectual and adaptive functioning that manifest during the developmental period. This condition encompasses challenges in reasoning, memory, problem-solving, and learning, accompanied by impairments in everyday life skills, such as communication, self-care, and social interactions. Intellectual disability affects approximately 1% of the population in the United States, impacting an estimated 5...
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Dissociative Identity Disorder01:30

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Dissociative Identity Disorder (DID), previously termed multiple personality disorder, is a complex psychological condition characterized by the presence of two or more distinct identities or personality states. Each identity exhibits unique patterns of behavior, voice, and mannerisms and may possess separate memories and emotional responses. The alternating control between identities can result in memory gaps and challenges in recalling daily activities, often exacerbating the individual's...
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Disorders of the Nervous Tissue01:28

Disorders of the Nervous Tissue

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Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
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Autism Spectrum Disorder01:19

Autism Spectrum Disorder

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Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
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Related Experiment Video

Updated: Nov 1, 2025

Immunohistochemical Visualization of Hippocampal Neuron Activity After Spatial Learning in a Mouse Model of Neurodevelopmental Disorders
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Dendritic Integration Dysfunction in Neurodevelopmental Disorders.

Andrew D Nelson1, Kevin J Bender1

  • 1Department of Neurology, University of California, San Francisco, San Francisco, California, USA.

Developmental Neuroscience
|June 17, 2021
PubMed
Summary
This summary is machine-generated.

Dendritic dysfunction in neurons may underlie neurodevelopmental disorders (NDDs) like autism spectrum disorder (ASD) and intellectual disability (ID). Genes linked to NDDs impact dendrites, affecting neuronal processing and potentially explaining core symptoms.

Keywords:
Autism spectrum disorderChannelopathyDendriteEpilepsyNeurodevelopmental disorder

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Last Updated: Nov 1, 2025

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Area of Science:

  • Neuroscience
  • Genetics
  • Cell Biology

Background:

  • Neurodevelopmental disorders (NDDs), including autism spectrum disorder (ASD) and intellectual disability (ID), have significant genetic underpinnings.
  • Risk genes for NDDs are broadly categorized into chromatin modifiers and synaptic proteins.
  • The precise mechanisms by which these genetic dysfunctions lead to NDD phenotypes are still under investigation.

Purpose of the Study:

  • To review emerging evidence implicating dendritic dysfunction in NDDs.
  • To explore how genetic factors associated with ASD and ID specifically affect dendritic function.
  • To propose dendritic integration defects as a potential core phenotype in NDDs.

Main Methods:

  • Literature review of current research on NDD genetics and neuronal function.
  • Analysis of the role of high-confidence ASD genes within dendritic structures.
  • Examination of how NDD-associated genes regulate dendritic components like ion channels and receptors.

Main Results:

  • Many genes associated with ASD are found to function within dendrites, regulating synaptic integration and excitability.
  • NDD-associated genes, including chromatin modifiers, influence the expression and scaffolding of key dendritic proteins.
  • Dysfunction in these genes can lead to impaired dendritic integration and excitability.

Conclusions:

  • Dendritic integration and excitability are fundamental to cognitive and sensory processing, processes often impaired in NDDs.
  • Defects in dendritic function, driven by specific NDD-associated genes, may represent a unifying phenotype for ASD and ID.
  • Targeting dendritic mechanisms could offer new therapeutic avenues for neurodevelopmental disorders.