Disentangling interoception : insights from focal strokes affecting the perception of external and internal milieus

Interoception is the moment-to-moment sensing of the physiological condition of the body. The multimodal sources of interoception can be classified into two different streams of afferents: an internal pathway of signals arising from core structures (i.e., heart, blood vessels, and bronchi) and an ex...

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Detalles Bibliográficos
Autor principal:	Couto, Blas
Formato:	Artículo publishedVersion
Lenguaje:	Inglés
Publicado:	2018
Materias:	Lesión Neuropsicología Sensibilización ambiental Percepción de distancia Interoception Interoceptive awareness Peripersonal space Lesion Stroke Interoceptive sensitivity Exteroception
Acceso en línea:	https://doi.org/10.3389/fpsyg.2015.00503 https://repositorio.utdt.edu/handle/20.500.13098/11074
Aporte de:	Repositorio Digital Universidad Torcuato Di Tella de Universidad Torcuato Di Tella

id	I57-R16320.500.13098-11074
record_format	dspace
institution	Universidad Torcuato Di Tella
institution_str	I-57
repository_str	R-163
collection	Repositorio Digital Universidad Torcuato Di Tella
language	Inglés
orig_language_str_mv	eng
topic	Lesión Neuropsicología Sensibilización ambiental Percepción de distancia Interoception Interoceptive awareness Peripersonal space Lesion Stroke Interoceptive sensitivity Exteroception
spellingShingle	Lesión Neuropsicología Sensibilización ambiental Percepción de distancia Interoception Interoceptive awareness Peripersonal space Lesion Stroke Interoceptive sensitivity Exteroception Couto, Blas Disentangling interoception : insights from focal strokes affecting the perception of external and internal milieus
description	Interoception is the moment-to-moment sensing of the physiological condition of the body. The multimodal sources of interoception can be classified into two different streams of afferents: an internal pathway of signals arising from core structures (i.e., heart, blood vessels, and bronchi) and an external pathway of body-mapped sensations (i.e., chemosensation and pain) arising from peripersonal space. This study examines differential processing along these streams within the insular cortex (IC) and their subcortical tracts connecting frontotemporal networks. Two rare patients presenting focal lesions of the IC (insular lesion, IL) or its subcortical tracts (subcortical lesion, SL) were tested. Internally generated interoceptive streams were assessed through a heartbeat detection (HBD) task, while those externally triggered were tapped via taste, smell, and pain recognition tasks. A differential pattern was observed. The IC patient showed impaired internal signal processing while the SL patient exhibited external perception deficits. Such selective deficits remained even when comparing each patient with a group of healthy controls and a group of brain-damaged patients. These outcomes suggest the existence of distinguishable interoceptive streams. Results are discussed in relation with neuroanatomical substrates, involving a fronto-insulo-temporal network for interoceptive and cognitive contextual integration.
format	Artículo publishedVersion
author	Couto, Blas
author_facet	Couto, Blas
author_sort	Couto, Blas
title	Disentangling interoception : insights from focal strokes affecting the perception of external and internal milieus
title_short	Disentangling interoception : insights from focal strokes affecting the perception of external and internal milieus
title_full	Disentangling interoception : insights from focal strokes affecting the perception of external and internal milieus
title_fullStr	Disentangling interoception : insights from focal strokes affecting the perception of external and internal milieus
title_full_unstemmed	Disentangling interoception : insights from focal strokes affecting the perception of external and internal milieus
title_sort	disentangling interoception : insights from focal strokes affecting the perception of external and internal milieus
publishDate	2018
url	https://doi.org/10.3389/fpsyg.2015.00503 https://repositorio.utdt.edu/handle/20.500.13098/11074
work_keys_str_mv	AT coutoblas disentanglinginteroceptioninsightsfromfocalstrokesaffectingtheperceptionofexternalandinternalmilieus
bdutipo_str	Repositorios
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Disentangling interoception : insights from focal strokes affecting the perception of external and internal milieus

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