Handedness
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In human biology, handedness is an individual's preferential use of one hand, known as the dominant hand, due to and causing it to be stronger, faster or more dextrous. The other hand, comparatively o
Stenciled hands at the Cueva de las Manos in Argentina. Left hands make up over 90% of the artwork, demonstrating the prevalence of right-handedness.
A schoolgirl writing with her left hand
Michael Vick, a left-handed American football quarterback, winds up to throw the ball to his teammate.
Epigenetics
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Epigenetics is the study of changes in gene expression that occur without altering the DNA sequence. The Greek prefix epi- in epigenetics implies features that are "on top of" or "in addition to" the
Handedness
…taught young to use their non-dominant hand it can become functionally dominant in what they trained. Most research suggests that left-handedness has an epigenetic marker—a combination of genetics, biology and the environment. In some cultures, the use of the left hand can be considered disrespectful. Because the…
Activation
Repression
Including medial prefrontal cortex (mPFC)