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Observations, reflections and speculations on the cerebral determinants of mood and on the bilaterally asymmetrical distributions of the major neurotransmitter systems

Observations, reflections and speculations on the cerebral determinants of mood and on the... I will, in this chapter, review the general organisation of the neural systems determining mood states and attempt to integrate topographic aspects with the emerging knowledge on the asymmetrical distribution of the major neurotransmitter systems. It has been shown that in the mammalian and in the avian brain the left hemisphere is specialised for communicative functions and the right hemisphere for spatial and emotional (incuding sexual and aggressive) functions. From a general systems theory perspective, three functional principles are necessary and sufficient to account for the general characteristics of a linked double-brain system: 1. Intra-hemispheric activation 2. Contralateral inhibition 3. Inter-hemispheric coupling (1,2) A general finding, invariant across several species (i.e. in rodents, chicks and in homo sapiens: see Flor-Henry (3)), demonstrates that emotionality, aggression and sexual arousal, all dependent on right hemispheric systems, are modulated by inhibitory influences originating in the left hemisphere. Neuro-hormonal interactions are of critical importance in the development of (some) lateralised neural assemblies as, for example, song control in the male canary is testosterone-dependent: the left syrinx is heavier and has a higher acetylcholine esterase content than the right syrinx, differences which disappear in the castrated male or which can be induced by http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Neurologica Scandinavica Wiley

Observations, reflections and speculations on the cerebral determinants of mood and on the bilaterally asymmetrical distributions of the major neurotransmitter systems

Flor‐Henry, Pierre
Acta Neurologica Scandinavica , Volume 74 (S109) – Oct 1, 1986
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References (126)

Publisher
Wiley
Copyright
1986 Blackwell Munksgaard
ISSN
0001-6314
eISSN
1600-0404
DOI
10.1111/j.1600-0404.1986.tb04866.x
Publisher site
See Article on Publisher Site

Abstract

I will, in this chapter, review the general organisation of the neural systems determining mood states and attempt to integrate topographic aspects with the emerging knowledge on the asymmetrical distribution of the major neurotransmitter systems. It has been shown that in the mammalian and in the avian brain the left hemisphere is specialised for communicative functions and the right hemisphere for spatial and emotional (incuding sexual and aggressive) functions. From a general systems theory perspective, three functional principles are necessary and sufficient to account for the general characteristics of a linked double-brain system: 1. Intra-hemispheric activation 2. Contralateral inhibition 3. Inter-hemispheric coupling (1,2) A general finding, invariant across several species (i.e. in rodents, chicks and in homo sapiens: see Flor-Henry (3)), demonstrates that emotionality, aggression and sexual arousal, all dependent on right hemispheric systems, are modulated by inhibitory influences originating in the left hemisphere. Neuro-hormonal interactions are of critical importance in the development of (some) lateralised neural assemblies as, for example, song control in the male canary is testosterone-dependent: the left syrinx is heavier and has a higher acetylcholine esterase content than the right syrinx, differences which disappear in the castrated male or which can be induced by

Journal

Acta Neurologica Scandinavica – Wiley

Published: Oct 1, 1986

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