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Related Concept Videos

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.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
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Motor and Sensory Areas of the Cortex01:14

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The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
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Modeling in Therapy01:26

Modeling in Therapy

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Modeling, a key technique in therapy, uses observational learning to help clients acquire and practice new skills by watching therapists demonstrate desired behaviors. This approach, rooted in Albert Bandura's concept of vicarious learning, plays a significant role in therapeutic interventions for various psychological conditions, including social anxiety, ADHD, and depression.
Participant Modeling
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Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

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Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
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Postsynaptic Potential (PSP)01:32

Postsynaptic Potential (PSP)

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Postsynaptic potential (PSP) refers to a change in the electrical potential of a neuron when neurotransmitters released by presynaptic neurons bind to postsynaptic receptors. This potential can either be excitatory, leading to depolarization and ultimately action potential generation, or inhibitory, leading to hyperpolarization and suppression of the postsynaptic neuron.
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Association Areas of the Cortex01:21

Association Areas of the Cortex

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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:
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Related Experiment Video

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Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder
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Understanding Sensory-Motor Disorders in Autism Spectrum Disorders by Extending Hebbian Theory: Formation of a

Eiichi Nojiri1, Kenkichi Takase2

  • 1Graduate School of Human Sciences, Osaka University.

Perspectives on Psychological Science : a Journal of the Association for Psychological Science
|November 1, 2023
PubMed
Summary

Autism spectrum disorder (ASD) symptoms may stem from rigid-autonomous phase sequences (RAPS) in the brain. This new theory offers a biopsychological framework for understanding and potentially treating ASD behavioral abnormalities.

Keywords:
Hebb’s theoryautismautism spectrum disorderneuropsychiatric disorder

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Developmental Psychology

Background:

  • Autism spectrum disorder (ASD) is a neuropsychiatric condition marked by social communication deficits and repetitive behaviors.
  • Etiology remains unclear despite reported genetic, neurological, and endocrine abnormalities.
  • Higher-order cognitive dysfunctions like impaired theory of mind and memory issues are observed in ASD.

Purpose of the Study:

  • To extend Hebb's biopsychology theory for ASD.
  • To propose a theoretical framework explaining ASD behavioral abnormalities.
  • To introduce the rigid-autonomous phase sequence (RAPS) theory for ASD.

Main Methods:

  • Theoretical extension of Hebb's biopsychology.
  • Conceptual framework development based on RAPS formation.
  • Biopsychological mechanism proposal for ASD.

Main Results:

  • A novel theoretical framework for understanding ASD behavioral abnormalities is proposed.
  • Rigid-autonomous phase sequences (RAPS) are hypothesized as a cause for a wide range of ASD symptoms.
  • A potential biopsychological treatment mechanism targeting RAPS is suggested.

Conclusions:

  • The RAPS theory provides a comprehensive explanation for ASD behavioral deficits.
  • This framework may guide future research into the neurobiological underpinnings of ASD.
  • The proposed mechanism offers a potential avenue for novel ASD therapeutic strategies.