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An answer to Question 1 about synapse connections might possibly be found in a New Scientist article earlier this month on brain maps of human foetuses using laser microdissection: the team has already found that a collection of genes associated with autism is particularly active in the newly developed excitatory neurons in the cortex. Ed Lein et al ...


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I don't have an answer in terms of percentages, but I thought I could offer at least some insight I may have. Really cool question though, never really thought of this. So two ways to go about this answer. For one, when you close your eyes you immediately can register so called alpha waves from an EEG (electroencephalography). This was actually how EEG was ...


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I personally used BRIAN simulator. Its a Python based library specialised in cortical neurons modelling and make network connections. I did my master thesis using it, I also have a published IEEE paper done using it.


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Vesicle count and spine morphology are two of the better-known predictors of synaptic strength. But they are not the whole story. Glia, like astrocytes can also modulate synaptic strength by releasing their own neurotransmitter or co-agonist, but you need more than just images to detect that process. There is also the matter of receptor distribution in ...


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On a totally personal basis.. I know music stimulates the brain drastically. I've noticed those that seem to love learning tend to lean more toward Classic music or Techno... (that's a totally biased opinion though) On a researching note.. http://en.wikipedia.org/wiki/Biological_basis_of_personality The above link should be a great start for you! ...


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Personality studies are typically investigated via the "big five" traits. Some attempts to legitimize the personality traits through biology have been pursued [1]. Following are some excerpts from a particular study that proposed a hypothesis and searched for confirmation in 116 subjects. Of course, this means we should be wary of confirmation bias when ...


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Cool question...really huge though. I'll have to revisit this as I find time to add more. For starters, I just saw an interesting link in @ForbiddenOverseer's question, "Is there any Personality theory that uses scientific methodology instead of subjective interpretations?" For some info on cerebral blood flow and extraversion, check out Johnson and ...


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The initiation of SA node action potential is through slow Na+ channels (slow, inward depolarising current, note there are no fast Na channels. These pacemaker setting Na channels only act when it is VERY hyperpolarised, won't initiate otherwise). As the membrane potential rises, you get the additional opening of T-type calcium channels and then the opening ...


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Cardiac cells rely on calcium for upstroke of the action potential, which is why they tend to have a slower rise than cells that rely on sodium for upstroke.



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