Abstract
By measuring the supraorbital temperature at certain parts of the right and left sides of the forehead, the condition of the ophthalmic artery, as well as that of the internal carotid artery at the right and left side of the brain was indirectly estimated. In normal individuals, when the left supraorbital temperature was higher than that of the right supraorbital temperature, the majority of the subjects had a grasping force of the right hand greater than that of the left hand. When the right supraorbital temperature was higher than that of the left, the majority of subjects had a grasping force of the left hand greater than that of the right hand. When the supraorbital temperature measurement was the same or nearly the same, the majority of subjects had nearly the same grasping force of the right and left hand. When the dominant hand predicted by the supraorbital temperature measurements did not agree with the actual measurements of the grasping force of the right and left hand, we were almost always able to locate diseases or abnormal conditions causing such a discrepancy, and therefore the method can be a useful supplement for routine diagnostic procedures. Furthermore, the author found that in some subjects, not only did exercise of one hand and arm increase the supraorbital temperature of the corresponding area of the opposite side of the forehead but also the mere act of continuously imagining doing the same exercise of one hand (particularly opening and closing it) and arm significantly increased the supraorbital temperature of the corresponding opposite side of the forehead. Additional measurement of temperature of the infra-orbital area, on the nose, and at the occipital area further enhances the clinical usefulness of this method in making diagnoses of circulatory disturbances related either to the internal or external carotid artery. In the majority of subjects, skin DC resistance or skin impedance measured between the center of the thumbprint and the indifferent electrode, was smaller in the dominant hand (confirmed through measurements) than in the non-dominant hand.
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