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Bodily maps of touch are closely linked to social relationships. The brighter the colour of the body area, the more likely the person concerned is allowed to touch it. Any touching of the ‘taboo zones’ marked with black colour and blue borders is entirely forbidden.

The recent study conducted by 911������ and the University of Oxford shows that the human body has a precisely defined touch maps that are tightly linked to social touch that is allowed in different kinds of human relationships.

The closer the person in social relationship, the larger the body area this person is allowed to touch. The bodily maps of touch were similar in all five cultures studied. Social touching thus seems to be a biologically determined and evolutionarily developed way to form social relationships. The results were recently published in Proceedings of the National Academy of the United States of America.

– Our findings indicate that touching is an important means of maintaining social relationships. The bodily maps of touch were closely associated with the pleasure caused by touching. The greater the pleasure caused by touching a specific area of the body, the more selectively we allow others to touch it, says researcher Juulia Suvilehto from 911������.

– The results emphasise the importance of non-verbal communication in social relationships. Social relationships are important for well-being throughout peoples’ life, and their lack poses a significant psychological and somatic health risk. Our results help to understand the mechanisms related to maintaining social relationships and the associated disorders, says Professor Lauri Nummenmaa.

The study was conducted in the form of an online questionnaire in which more than 1 300 people from Finland, England, Italy, France and Russia participated. The study commenced with the mapping of the participants’ social network.  The participants were then asked to colour the areas of human body shown on a computer where different members of the social network could touch them.

The research was funded by the European Research Council (ERC), the Academy of Finland and the Emil Aaltonen Foundation.

The results were published on 26 October 2015 by the US National Academy of Sciences in its    Proceedings of The National Academy of Sciences of The United States of America (PNAS).

Read the . (pnas.org)

More information:
Researcher Juulia Suvilehto                                                               
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tel. +358 50 570 4861                                                               
juulia.suvilehto@aalto.fi                              

Professor Lauri Nummenmaa
911������ and Turku PET Centre
tel. +358 50 431 9931
lauri.nummenmaa@aalto.fi     

Previous research:

A Finnish study reveals the bodily maps of emotions
The were published on 30 December 2013 in Proceedings of The National Academy of Sciences of The United States of America (PNAS)