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10

It's been known that Increased Corpus Callosum size was found in musicians who began music training before age 7 and that Training working memory leads to growth in Corpus Callosum. As for how to train working memory, that's a diverse subject. There have been a lot of experiments involving Training working memory for ADHD patients, however a meta-analysis ...


9

The Lateral Preference Inventory Coren (1993) developed an inventory for lateral preference (The Lateral Preference Inventory). Several items concerned ear preference. I found the choice of items to be quite interesting. See below for the items concerned with ear preference. Based on a large adult normative sample, a total score was created for the ...


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First, biological features do not always arise from some intrinsic benefit. They can also be byproducts of other adaptations, or spandrels. That being said, one example of a possible benefit is specialization. For instance, birds will develop asymmetries in their visual system based on light inputs to their outward-facing eye (one eye faces the eggshell, ...


5

Yes, there are benefits, but I don't think it requires long-term switches. Studies have used this as a manipulation to try and increase self control and have found that it decrease aggression. Based on this, once one has mastered using the non-dominant hand, it seems like the benefit of continuing to use that hand might be over (as it no longer requires ...


4

Short answer: Probably not. Let's first keep in mind that very few split-brain patients have ever been studied. Add to this that inner speech is not a well studied area in general. As the resulting Venn diagram suggests, there is next to nothing known about inner speech in split-brain patients. Second, remember that one of the key reasons why inner ...


3

Alien hand syndrome (AHS) is an extremely rare disorder. It is so rare, there appears to be no available prevalence studies. In the AHS literature, case studies are therefore nearly universal. For all intents and purposes, it is reasonable to say that AHS appears to be a disease so rare that the empirical prevalence rates are in every listed case ...


2

The formal name for crossing in biology is decussation. It is thought to be a result of anatomical development as well as a recovery mechanism. Essentially, it's an emergent result of negotiations between genetics, development, and environment. I've emphasized the relevant sentences in two abstracts below. Abstract: The crossing of nerve tracts from ...


2

I don't know if it's possible to train the corpus callosum, but aside from that, I don't think you can read text in the left visual field for longer than a fraction of a second. To be able to read or see something in your left visual field, your eyes must be focused on something to the right of that (Imagine a fixation cross in the middle of a PC screen ...


2

Alright, so I'll give this question a go... Admittedly, I'm not really familiar with theories of emotion lateralization, but let's look at some meta-analyses for insight!!! As a quick theoretical note, a single study cannot confirm emotion-related lateralization. The representation of emotions or affect in the brain can change from context to context, ...


1

To quote the great Aldous Huxley : How shall we define a god? Expressed in psychological terms (which are primary-there is no getting behind them) a god is something that gives us the peculiar kind of feeling which Professor Otto has called “numinous”. Numinous feelings are the original god-stuff from which the theory-making mind extracts the ...


1

Dichotic listening task can be helpful to identify if someone has right ear advantage (REA) or LEA.


1

I've asked this question about dominance of brain hemispheres. in the question there are examples of drawings made by split brain patients using only one hand and eye at a time. I don't know if using both eyes while drawing produces different results, but the images suggest that the ability to process memory of objects is impaired:


1

Basically the same as a normal two-halved brain. Circumstances in which function is altered are fairly limited. For details, see case reports on Wikipedia's split-brain page, and this episode of Scientific American Frontiers that features Mike Gazzaniga's research, as mentioned here. Gazzaniga's research was reviewed in a Nature news feature (Wolman, 2012), ...


1

From split brain studies I find it might be possible that the right and left hemisphere differences are caused from reading top down left to right. So perhaps learning a written language that reads right to left would prove beneficial. But from what I found walking also increases the corpus callosum. But walking is found to benefit the brain density in ...



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