For questions about the biology of the nervous system, from a macroscopic to microscopic perspective.

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Are there any serious neuroscientific theories of emotional valence?

Could anyone tell me if there are any serious neuroscientific mechanisms that have been proposed to explain how feelings of body states take on a positive or negative character (valence)? An example ...
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1answer
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Where in the brain is meaning extracted from visual information?

I am looking into several systems for improving learning speeds and ran into a question I seem unable to answer on my own: When we read a word, it somehow gets converted into it's abstract meaning. ...
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Number of presynaptic inputs per cell in primary visual cortex

I have been digging in the literature lately, but I haven't found a nice answer with clear cut numbers (avg +- std) to this question: How many presynaptic inputs receives a pyramidal cell in primary ...