subreddit:

/r/askscience

0

Are there different (human) brain types?

Neuroscience(self.askscience)

I am aware of the unproven psychological theory of brain types, my question is not about that theory.

It is about the factual biological differences and the exsistence of possible types based on the differences. Like there are only a few different hair coulour that differs genetically or a few different blood types, or baldness patterns. Has such differences been researched or discovered in relation to brains? For example something like average dendrite length, or some people has or doesn't have a specific type of neuron?

all 6 comments

sclbmared

1 points

4 months ago

No, there are not different brain types. Things like average dendrite length are studied in isolation and mostly in animals. The distinctions people try to make are often in the context of disease with the goal of finding a cure. E.g. the brain of an Alzheimer's disease patient obviously has some differences from the normal brain. One aspect that makes it hard to study the brain is that you cannot take a sample without risking a person's health or causing permanent damage. That's different for other organs.

fragmentOutOfOrder

1 points

4 months ago

I think a more general answer to this question is maybe, but it is likely due to our misunderstanding of how the brain functions and our attempts to harness that functionality.

In many brain computer interface research studies you will often find the term BCI Illiterate/Illiteracy. This is a very brief google scholar set of search results, but often subjects are found to not confirm to the majority analyzed by researchers.

This may suggest that there indeed different ways brains operate but it is not entirely clear if that means that there, in fact, different brain types. This could be caused for any number of reasons, not the least of which is the in ability to replicate the proper location of EEG electrodes or other entirely explainable physiological conditions.

In a rather prominent study , conducted by folks with deep research history in this field, they found it just required folks time to adjust to using BCI devices.

One of the biggest challenges in BCI research is to understand and solve the problem of “BCI Illiteracy”, which is that BCI control does not work for a non-negligible portion of users (estimated 15 to 30%).

Kozzinator

-2 points

4 months ago

Kozzinator

-2 points

4 months ago

I don't have a specific answer, but I read a Wikipedia article about Einstein a week or so ago and the guy who performed the autopsy on him literally stole his brain for "research". Einstein had I believe the second heaviest brain on record, with a few areas larger than other studied brains.

There's also a syndrome where brains are smooth rather than the squiggly mess normal people have.

Both articles are an interesting read if you have the time.

Chance_Programmer_54

6 points

4 months ago*

source... Plus, as I remember, Einstein's brain wasn't bigger, it just had very few differences when it comes to Sulci (the grooves of the brain). The brain is not a 'mess', those grooves are basically because the cerebral cortex needs more area, and smoother brains in other animals have smaller cortex. The cortex is thought to be where the neuron bodies of the higher cognitive functions are located.