Gender: Unspecified Location: Your mom's basement.
im a strange lefty
i used to be right-handed but after i broke my left wrist i began writing left-handed for some reason
when i broke that wrist again, i taught myself to write with the cast on
Gender: Unspecified Location: Your mom's basement.
causes of left-handedness
Hand orientation is developed in unborn children, most commonly determined by observing which hand is predominantly licked or held close to the mouth.
In 2007, researchers discovered LRRTM1, the first gene linked to increased odds of being left-handed. The researchers also found evidence that possessing one particular form of this gene slightly raises the risk of psychotic mental illnesses such as schizophrenia.[20][21]
Long-term impairment of the right hand: People with long-term impairment of the right hand are more likely to become left-handed, even after their right hand heals.[citation needed] Such long-term impairment is defined as eight months or more.
Testosterone: Exposure to higher rates of testosterone before birth can lead to a left-handed child.This is the Geschwind theory, named after the neurologist who proposed it, Norman Geschwind. It suggests that variations in levels of testosterone during pregnancy shape the development of the fetal brain. Testosterone suppresses the growth of the left cerebral hemisphere and so more neurons migrate to the right hemisphere. The highly developed right hemisphere is now better suited to function as the center of language and handedness. The fetus is more likely to become left-handed, since the right hemisphere controls the left half of the body. The theory goes on to tie the exposure to higher levels of testosterone and the resultant right-hemisphere dominance to auto-immune disorders, learning disorders, dyslexia, and stuttering, as well as increased spatial ability.
KMC Community Forums
Jun 9th, 2009 02:53 AM
Bad Moon Rising - CCR
