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If instead of the actual head tilt (as compared to true vertical), the direction of the head tilt as interpreted by the brain (subjective head tilt) is given importance, then it is seen that the head tilt and ocular torsion are actually in the same direction in both the physiologic ocular counter-roll and the pathologic ocular tilt reaction.
Stoichiometry is founded on the law of conservation of mass where the total mass of the reactants equals the total mass of the products, leading to the insight that the relations among quantities of reactants and products typically form a ratio of positive integers. This means that if the amounts of the separate reactants are known, then the ...
By introducing large-angle disinhibition, [4] [21] this theory could also be used to explain indirect tilt effects. Around the 1970s, this theory has been developed into lateral inhibition theory by Blakemore et al. [22] [23] As in the visual cortex of the cat or the monkey, [24] [25] there are also orientation detectors in the human brain. Any ...
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The brain can also utilize lactate during exercise. [133] The brain stores glucose in the form of glycogen, albeit in significantly smaller amounts than that found in the liver or skeletal muscle. [134] Long-chain fatty acids cannot cross the blood–brain barrier, but the liver can break these down to produce ketone bodies.
For example, a positive valence would shift the emotion up the top vector and a negative valence would shift the emotion down the bottom vector. [11] In this model, high arousal states are differentiated by their valence, whereas low arousal states are more neutral and are represented near the meeting point of the vectors.
A positive test is indicated by patient report of a reproduction of vertigo and clinician observation of nystagmus (involuntary eye movement). For some patients, this maneuver may be contraindicated, and a modification may be needed that also targets the posterior semicircular canal. Such patients include those who are too anxious about ...
The frontal lobe is located at the front of each cerebral hemisphere and positioned in front of the parietal lobe and above and in front of the temporal lobe.It is separated from the parietal lobe by a space between tissues called the central sulcus, and from the temporal lobe by a deep fold called the lateral sulcus, also called the Sylvian fissure.