The impact of socioeconomic and stimulus inequality on human brain physiology

Abstract The brain undergoes profound structural and dynamical alteration in response to its stimulus environment. In animal studies, enriched stimulus environments result in numerous structural and dynamical changes along with cognitive enhancements. In human society factors such as education, trav...

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Autores principales:	Dhanya Parameshwaran, S. Sathishkumar, Tara C. Thiagarajan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/50dbd500773746a3a84831a615a8d55a
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spelling	oai:doaj.org-article:50dbd500773746a3a84831a615a8d55a2021-12-02T14:25:32ZThe impact of socioeconomic and stimulus inequality on human brain physiology10.1038/s41598-021-85236-z2045-2322https://doaj.org/article/50dbd500773746a3a84831a615a8d55a2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85236-zhttps://doaj.org/toc/2045-2322Abstract The brain undergoes profound structural and dynamical alteration in response to its stimulus environment. In animal studies, enriched stimulus environments result in numerous structural and dynamical changes along with cognitive enhancements. In human society factors such as education, travel, cell phones and motorized transport dramatically expand the rate and complexity of stimulus experience but diverge in access based on income. Correspondingly, poverty is associated with significant structural and dynamical differences in the brain, but it is unknown how this relates to disparity in stimulus access. Here we studied consumption of major stimulus factors along with measurement of brain signals using EEG in 402 people in India across an income range of $0.82 to $410/day. We show that the complexity of the EEG signal scaled logarithmically with overall stimulus consumption and income and linearly with education and travel. In contrast phone use jumped up at a threshold of $30/day corresponding to a similar jump in key spectral parameters that reflect the signal energy. Our results suggest that key aspects of brain physiology increase in lockstep with stimulus consumption and that we have not fully appreciated the profound way that stimulus expanding aspects of modern life are changing our brain physiology.Dhanya ParameshwaranS. SathishkumarTara C. ThiagarajanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Dhanya Parameshwaran S. Sathishkumar Tara C. Thiagarajan The impact of socioeconomic and stimulus inequality on human brain physiology
description	Abstract The brain undergoes profound structural and dynamical alteration in response to its stimulus environment. In animal studies, enriched stimulus environments result in numerous structural and dynamical changes along with cognitive enhancements. In human society factors such as education, travel, cell phones and motorized transport dramatically expand the rate and complexity of stimulus experience but diverge in access based on income. Correspondingly, poverty is associated with significant structural and dynamical differences in the brain, but it is unknown how this relates to disparity in stimulus access. Here we studied consumption of major stimulus factors along with measurement of brain signals using EEG in 402 people in India across an income range of $0.82 to $410/day. We show that the complexity of the EEG signal scaled logarithmically with overall stimulus consumption and income and linearly with education and travel. In contrast phone use jumped up at a threshold of $30/day corresponding to a similar jump in key spectral parameters that reflect the signal energy. Our results suggest that key aspects of brain physiology increase in lockstep with stimulus consumption and that we have not fully appreciated the profound way that stimulus expanding aspects of modern life are changing our brain physiology.
format	article
author	Dhanya Parameshwaran S. Sathishkumar Tara C. Thiagarajan
author_facet	Dhanya Parameshwaran S. Sathishkumar Tara C. Thiagarajan
author_sort	Dhanya Parameshwaran
title	The impact of socioeconomic and stimulus inequality on human brain physiology
title_short	The impact of socioeconomic and stimulus inequality on human brain physiology
title_full	The impact of socioeconomic and stimulus inequality on human brain physiology
title_fullStr	The impact of socioeconomic and stimulus inequality on human brain physiology
title_full_unstemmed	The impact of socioeconomic and stimulus inequality on human brain physiology
title_sort	impact of socioeconomic and stimulus inequality on human brain physiology
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/50dbd500773746a3a84831a615a8d55a
work_keys_str_mv	AT dhanyaparameshwaran theimpactofsocioeconomicandstimulusinequalityonhumanbrainphysiology AT ssathishkumar theimpactofsocioeconomicandstimulusinequalityonhumanbrainphysiology AT taracthiagarajan theimpactofsocioeconomicandstimulusinequalityonhumanbrainphysiology AT dhanyaparameshwaran impactofsocioeconomicandstimulusinequalityonhumanbrainphysiology AT ssathishkumar impactofsocioeconomicandstimulusinequalityonhumanbrainphysiology AT taracthiagarajan impactofsocioeconomicandstimulusinequalityonhumanbrainphysiology
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The impact of socioeconomic and stimulus inequality on human brain physiology

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