Cargando…
Do Right-Handed Monkeys Use the Right Cheek Pouch before the Left?
There can be several factors that are likely to have played a role in the evolution of hand preference in humans and non-human primates, which the existing theories do not consider. There exists a possibility that hand preference in non-human primates evolved from the pre-existing lateralities in mo...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2014
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4028309/ https://www.ncbi.nlm.nih.gov/pubmed/24844660 http://dx.doi.org/10.1371/journal.pone.0097971 |
_version_ | 1782317065805234176 |
---|---|
author | Mangalam, Madhur Desai, Nisarg Singh, Mewa |
author_facet | Mangalam, Madhur Desai, Nisarg Singh, Mewa |
author_sort | Mangalam, Madhur |
collection | PubMed |
description | There can be several factors that are likely to have played a role in the evolution of hand preference in humans and non-human primates, which the existing theories do not consider. There exists a possibility that hand preference in non-human primates evolved from the pre-existing lateralities in more elementary brain functions and behavior, or alternatively, the two coevolved. A basic example can be a hand-mouth command system that could have evolved in the context of ingestion. In the present study, we examined the relationship between lateralities in prehension and mastication processes, that is, hand and cheek pouch usage, in free-ranging bonnet macaques, Macaca radiata. The macaques preferentially used one hand–the ‘preferred’ hand, to pick up the bananas lying on the ground. Lateralities in hand and cheek pouch usage (for both filling and emptying) were positively related with each other, that is, the macaques used the cheek pouch corresponding to the preferred hand predominantly and before the other. Moreover, when the macaques used the non-preferred hand to pick up the bananas, the frequency of contralateral cheek pouch usage was higher than the frequency of ipsilateral cheek pouch usage, that is, the combined structure of hand, mouth, and food did not influence the relationship between laterality in hand usage and laterality in cheek pouch usage. These findings demonstrate laterality in a relatively more involuntary function than those explored previously in any non-human primate species (e.g., facial expressions and manual gestures). |
format | Online Article Text |
id | pubmed-4028309 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-40283092014-05-21 Do Right-Handed Monkeys Use the Right Cheek Pouch before the Left? Mangalam, Madhur Desai, Nisarg Singh, Mewa PLoS One Research Article There can be several factors that are likely to have played a role in the evolution of hand preference in humans and non-human primates, which the existing theories do not consider. There exists a possibility that hand preference in non-human primates evolved from the pre-existing lateralities in more elementary brain functions and behavior, or alternatively, the two coevolved. A basic example can be a hand-mouth command system that could have evolved in the context of ingestion. In the present study, we examined the relationship between lateralities in prehension and mastication processes, that is, hand and cheek pouch usage, in free-ranging bonnet macaques, Macaca radiata. The macaques preferentially used one hand–the ‘preferred’ hand, to pick up the bananas lying on the ground. Lateralities in hand and cheek pouch usage (for both filling and emptying) were positively related with each other, that is, the macaques used the cheek pouch corresponding to the preferred hand predominantly and before the other. Moreover, when the macaques used the non-preferred hand to pick up the bananas, the frequency of contralateral cheek pouch usage was higher than the frequency of ipsilateral cheek pouch usage, that is, the combined structure of hand, mouth, and food did not influence the relationship between laterality in hand usage and laterality in cheek pouch usage. These findings demonstrate laterality in a relatively more involuntary function than those explored previously in any non-human primate species (e.g., facial expressions and manual gestures). Public Library of Science 2014-05-20 /pmc/articles/PMC4028309/ /pubmed/24844660 http://dx.doi.org/10.1371/journal.pone.0097971 Text en © 2014 Mangalam et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Mangalam, Madhur Desai, Nisarg Singh, Mewa Do Right-Handed Monkeys Use the Right Cheek Pouch before the Left? |
title | Do Right-Handed Monkeys Use the Right Cheek Pouch before the Left? |
title_full | Do Right-Handed Monkeys Use the Right Cheek Pouch before the Left? |
title_fullStr | Do Right-Handed Monkeys Use the Right Cheek Pouch before the Left? |
title_full_unstemmed | Do Right-Handed Monkeys Use the Right Cheek Pouch before the Left? |
title_short | Do Right-Handed Monkeys Use the Right Cheek Pouch before the Left? |
title_sort | do right-handed monkeys use the right cheek pouch before the left? |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4028309/ https://www.ncbi.nlm.nih.gov/pubmed/24844660 http://dx.doi.org/10.1371/journal.pone.0097971 |
work_keys_str_mv | AT mangalammadhur dorighthandedmonkeysusetherightcheekpouchbeforetheleft AT desainisarg dorighthandedmonkeysusetherightcheekpouchbeforetheleft AT singhmewa dorighthandedmonkeysusetherightcheekpouchbeforetheleft |