Anxiety from a Phylogenetic Perspective: Is there a Qualitative Difference between Human and Animal Anxiety?

A phylogenetic approach to anxiety is proposed. The different facets of human anxiety and their presence at different levels of the phylum are examined. All organisms, including unicellular such as protozoan, can display a specific reaction to danger. The mechanisms enabling the appraisal of harmful...

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Main Authors: Catherine Belzung, Pierre Philippot
Format: Article
Language:English
Published: Wiley 2007-01-01
Series:Neural Plasticity
Online Access:http://dx.doi.org/10.1155/2007/59676
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author Catherine Belzung
Pierre Philippot
author_facet Catherine Belzung
Pierre Philippot
author_sort Catherine Belzung
collection DOAJ
description A phylogenetic approach to anxiety is proposed. The different facets of human anxiety and their presence at different levels of the phylum are examined. All organisms, including unicellular such as protozoan, can display a specific reaction to danger. The mechanisms enabling the appraisal of harmful stimuli are fully present in insects. In higher invertebrates, fear is associated with a specific physiological response. In mammals, anxiety is accompanied by specific cognitive responses. The expression of emotions diversifies in higher vertebrates, only primates displaying facial expressions. Finally, autonoetic consciousness, a feature essential for human anxiety, appears only in great apes. This evolutive feature parallels the progress in the complexity of the logistic systems supporting it (e.g., the vegetative and central nervous systems). The ability to assess one's coping potential, the diversification of the anxiety responses, and autonoetic consciousness seem relevant markers in a phylogenetic perspective.
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spelling doaj-art-37e5de7fa5ea416583d683b559fc813a2025-02-03T01:04:48ZengWileyNeural Plasticity2090-59041687-54432007-01-01200710.1155/2007/5967659676Anxiety from a Phylogenetic Perspective: Is there a Qualitative Difference between Human and Animal Anxiety?Catherine Belzung0Pierre Philippot1EA3248 Psychobiologie des Émotions, UFR Sciences et Techniques, Université François-Rabelais, Tours 37200, FranceDepartment of Psychology, Université Catholique de Louvain, 10 place Mercier, Louvain-la-Neuve B-1348, BelgiumA phylogenetic approach to anxiety is proposed. The different facets of human anxiety and their presence at different levels of the phylum are examined. All organisms, including unicellular such as protozoan, can display a specific reaction to danger. The mechanisms enabling the appraisal of harmful stimuli are fully present in insects. In higher invertebrates, fear is associated with a specific physiological response. In mammals, anxiety is accompanied by specific cognitive responses. The expression of emotions diversifies in higher vertebrates, only primates displaying facial expressions. Finally, autonoetic consciousness, a feature essential for human anxiety, appears only in great apes. This evolutive feature parallels the progress in the complexity of the logistic systems supporting it (e.g., the vegetative and central nervous systems). The ability to assess one's coping potential, the diversification of the anxiety responses, and autonoetic consciousness seem relevant markers in a phylogenetic perspective.http://dx.doi.org/10.1155/2007/59676
spellingShingle Catherine Belzung
Pierre Philippot
Anxiety from a Phylogenetic Perspective: Is there a Qualitative Difference between Human and Animal Anxiety?
Neural Plasticity
title Anxiety from a Phylogenetic Perspective: Is there a Qualitative Difference between Human and Animal Anxiety?
title_full Anxiety from a Phylogenetic Perspective: Is there a Qualitative Difference between Human and Animal Anxiety?
title_fullStr Anxiety from a Phylogenetic Perspective: Is there a Qualitative Difference between Human and Animal Anxiety?
title_full_unstemmed Anxiety from a Phylogenetic Perspective: Is there a Qualitative Difference between Human and Animal Anxiety?
title_short Anxiety from a Phylogenetic Perspective: Is there a Qualitative Difference between Human and Animal Anxiety?
title_sort anxiety from a phylogenetic perspective is there a qualitative difference between human and animal anxiety
url http://dx.doi.org/10.1155/2007/59676
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