The Scientific World Journal

The Scientific World Journal / 2008 / Article

Research Article | Open Access

Volume 8 |Article ID 843427 | https://doi.org/10.1100/tsw.2008.113

Heinrich Schmidt, Martin Depner, Michael Kabesch, "Medial Position and Counterclockwise Rotation of the Parietal Scalp Hair-Whorl as a Possible Indicator for Non-Right-Handedness", The Scientific World Journal, vol. 8, Article ID 843427, 7 pages, 2008. https://doi.org/10.1100/tsw.2008.113

Medial Position and Counterclockwise Rotation of the Parietal Scalp Hair-Whorl as a Possible Indicator for Non-Right-Handedness

Academic Editor: Graham V. Lees
Received05 Jun 2008
Accepted07 Aug 2008

Abstract

The objective of our study was to assess the association between position and swirling direction of the parietal whorl (PW) and handedness. In 519 patients of a pediatric practice, PWs were located and the swirling direction determined. Of those patients, handedness could be specified in 217. The right-sided PW (n = 347; 70.8%) and the clockwise (CW) swirling type (n = 411; 83.9%) of all participants were predominant in children with one PW. Non-right-handedness (NRH) was found in 40 (18.4%). Medial position of the whorl per se increases the chance for NRH, indifferent of the swirling direction. In patients with counterclockwise (CCW) swirling, the chance of NRH increased 3.5-fold for the right-sided, 5.4-fold for the left-sided, and 12.9-fold for the medial-positioned whorl. We conclude that NRH is associated with the position (medial!) and the swirling direction (CCW!) of the PW.


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