Efficient Lévy walks in virtual human foraging

Abstract Efficient foraging depends on decisions that account for the costs and benefits of various activities like movement, perception, and planning. We conducted a virtual foraging experiment set in the foothills of the Himalayas to examine how time and energy are expended to forage efficiently,...

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Autores principales:	Ketika Garg, Christopher T Kello
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/79c3274f35004016932579e712dc8ac9
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spelling	oai:doaj.org-article:79c3274f35004016932579e712dc8ac92021-12-02T13:33:45ZEfficient Lévy walks in virtual human foraging10.1038/s41598-021-84542-w2045-2322https://doaj.org/article/79c3274f35004016932579e712dc8ac92021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84542-whttps://doaj.org/toc/2045-2322Abstract Efficient foraging depends on decisions that account for the costs and benefits of various activities like movement, perception, and planning. We conducted a virtual foraging experiment set in the foothills of the Himalayas to examine how time and energy are expended to forage efficiently, and how foraging changes when constrained to a home range. Two hundred players foraged the human-scale landscape with simulated energy expenditure in search of naturally distributed resources. Results showed that efficient foragers produced periods of locomotion interleaved with perception and planning that approached theoretical expectations for Lévy walks, regardless of the home-range constraint. Despite this constancy, efficient home-range foraging trajectories were less diffusive by virtue of restricting locomotive search and spending more time instead scanning the environment to plan movement and detect far-away resources. Altogether, results demonstrate that humans can forage efficiently by arranging and adjusting Lévy-distributed search activities in response to environmental and task constraints.Ketika GargChristopher T KelloNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ketika Garg Christopher T Kello Efficient Lévy walks in virtual human foraging
description	Abstract Efficient foraging depends on decisions that account for the costs and benefits of various activities like movement, perception, and planning. We conducted a virtual foraging experiment set in the foothills of the Himalayas to examine how time and energy are expended to forage efficiently, and how foraging changes when constrained to a home range. Two hundred players foraged the human-scale landscape with simulated energy expenditure in search of naturally distributed resources. Results showed that efficient foragers produced periods of locomotion interleaved with perception and planning that approached theoretical expectations for Lévy walks, regardless of the home-range constraint. Despite this constancy, efficient home-range foraging trajectories were less diffusive by virtue of restricting locomotive search and spending more time instead scanning the environment to plan movement and detect far-away resources. Altogether, results demonstrate that humans can forage efficiently by arranging and adjusting Lévy-distributed search activities in response to environmental and task constraints.
format	article
author	Ketika Garg Christopher T Kello
author_facet	Ketika Garg Christopher T Kello
author_sort	Ketika Garg
title	Efficient Lévy walks in virtual human foraging
title_short	Efficient Lévy walks in virtual human foraging
title_full	Efficient Lévy walks in virtual human foraging
title_fullStr	Efficient Lévy walks in virtual human foraging
title_full_unstemmed	Efficient Lévy walks in virtual human foraging
title_sort	efficient lévy walks in virtual human foraging
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/79c3274f35004016932579e712dc8ac9
work_keys_str_mv	AT ketikagarg efficientlevywalksinvirtualhumanforaging AT christophertkello efficientlevywalksinvirtualhumanforaging
_version_	1718392862532435968

Efficient Lévy walks in virtual human foraging

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