Great part of ' ' reading of pensamentos' ' it does not pass, in the reality, of ' ' reading of msculos' ' where ' ' reader of pensamentos' ' he interprets the movements involuntary and the adjustments of position made by the person whom ' ' em' concentrates its thoughts; ' (intent for) some object. The increase of the muscular tension the changes of the muscular tension, that are part of the atentiva reply, are subtle instants or. The increase of the muscular tension is found implicit in the inclination of the person in the direction of the stimulaton for which intent, but also it can be present without an instant adjustment of the position. When a person, after firmly giving attention during some time, leaves to make it, becomes loose itself makes comfortable itself in the chair, to the measure that diminishes the muscular tension. The changes visceral As atentivo party to suit, the changes visceral are not very sharp, nor obvious.
Not obstante, the attention involves fast alterations of the pulsation and sanguineous pressure. Amongst these changes, the ones that if observe with bigger easiness are the superficial breath during a period of deep attention, and the breath canine tooth for brief intervals, when the attention is in the height. The activities of the central nervous system Exist nervous correlatives of the attention. The fact to possess the reticular formation functions inhibiting but not only also activator will explain, porventura, the selective nature of the attention, that requires that the reaction the competitor stimulatons is regulated or suppressed determinative of the attention They divide themselves in two groups: (1) the external, objective or innate factors, and (2) the internal, subjective or acquired factors. When a quick person attention, its reply is the product of the interaction (1) of what it is as consequncia of inherited and acquired factors, and (2) they stimulate of them that they enter in contact with its agencies of the directions.