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Related Experiment Video

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Plasticity in the Interoceptive System.

Fernando Torrealba1, Carlos Madrid2, Marco Contreras3

  • 1Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile. ftorrealba@bio.puc.cl.

Advances in Experimental Medicine and Biology
|October 29, 2017
PubMed
Summary
This summary is machine-generated.

The adult central nervous system (CNS) exhibits plasticity in learning and memory, with the interoceptive system playing a key role in various learning behaviors, including taste aversion and fear conditioning.

Keywords:
Conditioned taste aversionDrug addictionFear learningInsular cortexInteroceptionNeophobia

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Area of Science:

  • Neuroscience
  • Behavioral Science

Background:

  • Learning and memory are key manifestations of brain plasticity in the adult central nervous system (CNS).
  • The interoceptive system, involved in sensing internal body states, is engaged in various learning and memory processes.
  • Basic plastic mechanisms underpin learning across different brain regions and levels.

Purpose of the Study:

  • To review four examples of learning in rats where the interoceptive system plays a significant role.
  • To highlight the involvement of the insular cortex in interoceptive processing related to learning and memory.
  • To examine the interoceptive system's contribution to conditioned taste aversion, drug addiction, neophobia, and aversive memory.

Main Methods:

  • Review of existing literature and studies, primarily focusing on rodent models (rats).
  • Analysis of the role of the interoceptive system and its pathways in different learning paradigms.
  • Examination of the insular cortex's function in interoceptive learning and memory.

Main Results:

  • The interoceptive system is critically important in conditioned taste aversion.
  • The insular cortex, a high-level interoceptive region, has a complex role in drug addiction.
  • The gustatory insular cortex is significantly involved in neophobia and aversive memory, including fear conditioning.

Conclusions:

  • The interoceptive system is integral to various forms of learning and memory, demonstrating significant brain plasticity.
  • Specific regions of the insular cortex are crucial for processing interoceptive information related to taste aversion, addiction, neophobia, and fear.
  • Understanding these interoceptive mechanisms provides insights into complex behaviors and neurological processes.