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Short answer People competent in mathematics have been shown to have higher activation of the left angular gyrus according to fMRI. EEG recordings have shown larger activity in the posterior parietal cortex. Background I think you are interested in what makes a good mathematician. A brain imaging study by Grabner et al. (2011). showed that the left anterior ...


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Remember that the action potential gets more positive in the first place, so increasing positivity is achievable. Net Na+ movement into the cell makes the potential more positive. This occurs as the Na+ gate (right on the image below) are open. The key message is that the membrane can move charge to cause an increase in either positive and negative ...


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I think that the type of fMRI you are referring to is blood-oxygenation-level-dependent fMRI or BOLD fMRI. The principle behind MRI in general is the detection of proton signals from water molecules. The proton signal is generated by magnetizing the protons in tissue, which causes their spin to change. A subsequent powerful radio wave disrupts this spin ...


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Short answer Sleep negatively impacts attention, in turn leading to decreased control of balance in challenging situations. Background Schlesinger et al. (1998) argue that under normal conditions, postural control appears to be automatic, and to require little or no attention in young, healthy adults during quiet standing with full sensory input. However, ...


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This is the figure OP talks about: Negative Conductance Caused by Entry of Sodium and Cesium Ions into the Potassium Channels of Squid Axons, Francisco Bezanill, Clay M. Armstrong (1972). Short answer is that in non-linear mode of ion channel operation other ions start passing through it (channel loses specificity). Cumulative effect (because of ...


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Circulation of cerebrospinal fluid (CSF) through the ventricular system is driven by motile cilia on ependymal cells of the brain. Hagenlocher C1, Walentek P, M Ller C, Thumberger T, Feistel K.Ciliogenesis and cerebrospinal fluid flow in the developing Xenopus brain are regulated by foxj1.Cilia. 2013 Sep 24;2(1):12. doi: 10.1186/2046-2530-2-12.



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