Variability of facial movements in relation to sexual dimorphism and age: three-dimensional geometric morphometric study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11110%2F18%3A10388491" target="_blank" >RIV/00216208:11110/18:10388491 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/18:10388491 RIV/00216208:11310/18:10388491 RIV/00064165:_____/18:10388491

Result on the web

<a href="https://doi.org/10.1016/j.jchb.2018.06.004" target="_blank" >https://doi.org/10.1016/j.jchb.2018.06.004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jchb.2018.06.004" target="_blank" >10.1016/j.jchb.2018.06.004</a>

Result language

angličtina

Original language name

Variability of facial movements in relation to sexual dimorphism and age: three-dimensional geometric morphometric study

Original language description

The aim of this study was to introduce suitable imaging technique and analytical methods for a detailed description of the facial movements in relation to sexual dimorphism and age in adult individuals. Removing of size factor from the analysis, we hypothesised that there will be no significant intersexual difference in facial mobility. We assume facial movements to be more pronounced in the older age category due to increasing the facial surface. We have compared five facial movements - raising eyebrows, closing eyes, pursing of the lips, inflating of the cheeks and smile - in relation to neutral expression of the human face. The material sample comprised three-dimensional facial surface models of healthy adult individuals of the Czech nationality (63 females, 58 males). Methods of geometric morphometry and multivariate statistics were used. Local tissue motion due to facial movements was expressed using colour-coded maps. The movement showing significant intersexual difference was inflating of the cheeks. Ageing in both sexes has significantly influenced the facial mobility on average after 50 years of age. Changes related to senescence have occurred in eye closing, smile and inflating of the cheeks. An enlarged facial surface has been noted in the group of individuals belonging to the older age category, what is probably the result of increased manifestation of skin folds and wrinkles. This is related to the loss of skin elasticity and overall weakening of the underlying muscles, especially in the infraorbital and cheeks area.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10600 - Biological sciences

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

HOMO: Journal of Comparative Human Biology

ISSN

0018-442X

e-ISSN

—

Volume of the periodical

69

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

8

Pages from-to

110-117

UT code for WoS article

000442714800004

EID of the result in the Scopus database

2-s2.0-85049329146