Comments

You must log in or register to comment.

Lord_Gadget t1_j4dl8h8 wrote

Well the "left and right brain" theory has been disproven for a long time.

The idea that there are right-brained and left-brained people is a myth. Although we all obviously have different personalities and talents, there's no reason to believe these differences can be explained by the dominance of one half of the brain over the other half.

If you're talking about pure functionality things, then it doesn't really mean anything beyond that being the dominant neural pathway developed during their life.

5

Prestigious_Carpet29 t1_j4t28de wrote

Replying to Lord_Gadget (#1,363,748)

This question is about the left side of your brain controls the right side of your body and vice versa - which I believe is evidenced from cases where people have brain-injury on one side, and lose control of the other side of their body.

This is completely different to the bogus concept of "right-brained and left-brained people" where one dominant side is supposedly more creative and the other more analytical - which at best is just a lazy psychological metaphor.

1

yonedaneda t1_j56ha1v wrote

It is broadly true that the left motor cortex is predominantly involved in the control of the right limbs, and vice versa. This isn’t absolutely true — you still see ipsilateral (same side) activation during movement, although its role in motor control isn’t very clear. There are slight differences in this activation in left and right handed people, and usually the hemisphere opposite the dominant hand is slightly more engaged in ipsilateral movements. Again, the functional role of this difference isn’t very clear.

There are other functional differences, beyond motor control. Language is typically lateralized to the left hemisphere, but greater right hemisphere lateralization is more common in the left handed (and in women).

2