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"La mano que uno usa más cuando es un feto de 10 semanas es la mano que uno usará más el resto de su vida", han asegurado los investigadores.
Los científicos analizaron también el movimiento de las manos en el útero, una actividad que comienza alrededor de las 10 semanas, y hallaron un vínculo similar entre la preferencia por una u otra mano después del nacimiento.
No hay indicios de que el cerebro tenga control sobre estos movimientos a una edad tan temprana en el útero materno, han asegurado los autores. Todo parece apuntar a que probablemente se trate de un acto reflejo de la medula espinal.
Webs Relacionadas
Queen's University
http://www.qub.ac.uk/
New Scientist
http://www.newscientist.com/