by ViTheta » Fri Feb 23, 2024 1:16 pm
There are differences between a lesbian's brain and an transsexual man's brain. There are differences between a gay man's brain and a transsexual woman's brain. While a lesbian's brain is similar in some ways to a cis man's brain, it is not identical. The same holds true for a gay man's brain and a cis woman.
The similarities get closer when you talk about a transsexual woman's brain and a cis woman's brain, and a transsexual man's brain and a cis man's brain. However, they are slight differences. And just to point out that we have been reading about these studies going back to the 1980's and the dissection of the brains of people, many of whom died from HIV/AIDS. As we stated, we have looked into studies involving MRI, CT Scans, dissection, and a variety of other methods.
Given the vast number of cases involving trans people being forced to emulate their assigned sex's mannerisms, the idea that brain plasticity is involved is irrelevant. Trans women are, quite often, forced to emulate male behaviours, sometimes to the point of being beaten and abused.
Our own experience would show this as we actually emulated our peers with regards to handedness, and even to this day we struggle with our right handedness because our brain was not wired from birth to use our right hand in the manner that we emulated. A study published in 2003 showed that handedness, even when forced to change, affects the brain and the brain still activates the areas to use the left hand even if someone has been forced to use their right hand their whole life.
Neuroplasticity does exist, but what they have often found is that, if something is innate to the biological makeup of the brain, it remains there no matter what attempts are made to change those behaviors. As per the example of left handedness. One cannot make a left handed person a completely non-left handed person nor can one make someone not trans or gay by forcing a change in behaviour.
Basically, when the brains have similar to near identical structures despite lived experiences, that is not neuroplasticity.
With regards to 'brain mapping being debunked', it has not been. A few scientists have raised concerns regarding that; however, that is often about where emotions and behaviours are experienced in the brain not what we were discussing. What we have been discussing is the brain's structure.
Another thing is, using a rotting fish brain to determine anything would not work because a fish brain, by its nature, is incredibly simple. Such a study would require the use of a more complicated brain to have any real validity. Even at that, you have one study vs. hundreds showing the validity of brain mapping.
At the crux of the issue regarding the brain maps of trans people being similar to the brains of the sex opposite that which they were born is similar idea of 'phantom limb syndrome'. Basically, the brain is, from birth, wired to accept signals for the genitals that the body was not born with. This can go to the point of some trans women even having PMS like symptoms as early as puberty despite not having a uterus.
With regards to DID...the MRI images have shown that someone switching rewires the brain so that it has a different personality. As you said, they abandoned their study. They could have and should have continued their research. After all, a jelly has the same electrical conductivity as a brain, but it does not show any signs of cognition.
Sorry for the long response.
Octavia.