Male & female rotation
Sex Difference On Spatial Skill Test Linked To Brain Structure:
Men consistently outperform women on spatial tasks, including mental rotation, which is the ability to identify how a 3-D object would appear if rotated in space. Now, a University of Iowa study shows a connection between this sex-linked ability and the structure of the parietal lobe, the brain region that controls this type of skill.The parietal lobe was already known to differ between men and women, with women’s parietal lobes having proportionally thicker cortexes or “grey matter.” But this difference was never linked back to actual performance differences on the mental rotation test.
UI researchers found that a thicker cortex in the parietal lobe in women is associated with poorer mental rotation ability, and in a new structural discovery, that the surface area of the parietal lobe is increased in men, compared to women. Moreover, in men, the greater parietal lobe surface area is directly related to better performance on mental rotation tasks.
This is a bit off the topic, but did anyone see this article? http://www.sciencedaily.com/releases/2008/12/081211121835.htm
It states that having boys/girls is an inherited trait. If your father had lots of boys, chances are that you will too if you are a man. This makes sense if some people have genes that would be comparitively advantageous in either males or females (like 3d visualization for males or beauty for females). It has already been shown that attractive parents are more likely to have daughters.
http://www.lse.ac.uk/collections/MES/pdf/JTB2007.pdf
My new PC comes with a separate graphics card with a 3-d graphics chip so enormous that it has its own fan to keep it from melting down from all the heat it generates.
On the other hand, Dell didn’t even offer a separate sound card because sound processing can be done superbly just using the main CPU.
So, if the human brain is at all like a modern PC, then strong 3-d visual processing is likely to take up a sizable volume of brain.
Lord, I hate that shitty scientific English. How about “The surface area of the parietal lobe is greater in men than in women”? If you find “greater” rather archaic, replace it by “bigger”.
“My new PC comes with a separate graphics card with a 3-d graphics chip so enormous that it has its own fan to keep it from melting down from all the heat it generates.”
welcome to the 3d graphics world… of 10 years ago. apparently u aren’t much of a gamer. the gpus of today handle physics calcs too. but the two are beginning to converge as cpus get more cores and gpus become more generally programmable.
but, i’m not sure that visual processing in ppl is really all that similar to graphics processing. the gpu is running algorithms designed to output colored pixels on a monitor. the visual part of the brain is running algorithms to interpret incoming visual data. gpus are doing almost the opposite of what the visual brain is doing. maybe they could do the same thing if given the correct algorithms, but even then i’m not sure the gpu architecture would be very optimized for the task. would the brain’s architecture look the same if it was designed to output information instead of interpret it?
this is however speculation. someone familiar w/ neuro-architecture feel free to debunk me.
It states that having boys/girls is an inherited trait. If your father had lots of boys, chances are that you will too if you are a man.
If the womb is acidic, female sperms wins( stronger yet slower).