The nomenclature of dextral, sinistral and attentional organs and functions.

  • Gould, George Milbrey, 1848-1922.
Date:
1907
Catalogue details

Licence: In copyright

Credit: The nomenclature of dextral, sinistral and attentional organs and functions. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    side, respectively, regardless of expertness, etc. Dextropedal, Sinistropedal.—Pertaining to the feet, in the same way. Dextraural, Sinistraural.—Pertaining to the ears, in the same way. Dextrocerebral, Sinistrocerebral.—Located in the right, or the left, cerebral hemisphere, respectively. Ambidextral, Ambidexterity.—Words with- out significance, or existence in fact, “ ghost- words,” which should never he used. Dominant Eye.—The eye which is uncon- sciously and preferentially chosen to guide de- cision and action. Divided Dominance, or Equidominant Eyes. —With shared or equal dominance. Alternating Dominance of the Eyes.—Domi- nance of one eye at one time or for one func- tion, alternating with that of the fellow for another time or function. Reversed Dominance.—The left, because of ametropia, disease, operation, etc., of the right, becoming the dominant eye in the right- handed; or vice versa in the case of the left- handed. Dextroexpertness.—Conjoint and superior expertness of the dextral sensory and muscular organs of the body; the union of right-handed- ness, right-eyedness, right-earedness and right- footedness. The innervational centers of the more expert organs are located in the left side of the brain. Sinistroexpertness.—Conjoint and superior expertness of the sinistral sensory and mus- cular organs of the body; the union of left- handedness, left-eyedness, left-earedness, and left-footedness. The innervational centers of the more expert organs are located in the right half-brain. Mixed Dextrosinistral Expertness.—Some of the centers of the more expert organs in con- joint action are located in one, and some in the opposite half-brain. What was once meant by the really meaningless term “ am- bidexterity,” as applied only to the hands. Trailing Hand, “ The Trailer.”—In syn- chronous writing of both hands, that upon which the attention, visual or central, is not fixed. Visual Attention.—That existing when the eyes consciously observe a fixed or moving ob- ject; during the act central or mental atten- tion is fused with it. Central Attention.—The “ imagination,” or mental remaking, of the image, by the mind or central mechanism when the peripheral visual attention is abrogated. Single-stream Visual Attention.—That form of visual attention existing when the eyes fol- low a linear concatenation of single or unitary macular images to the exclusion of all others. Single-stream Central Visual Attention.— That when the central visual attention, with- out objectively forming images, follows the passing of imagined single or unitary images in single file. Multiple Synchronous Visual Attention.— That when the attention recognizes two or more discrete sets of retinal images at the same time—as when the musician reads sev- eral staffs of music-notes, observes key-boards and pedals, the indications as to stops, tempo, expression, etc. Multiple Synchronous Central Visual At- tention.—The imagining or mental reproduc- tion of multiple synchronous visual trains without the objectively formed images. Single-stream Auditory Attention.—That when a monotone, a sound, or concatenation of single notes or sounds, is listened to, ex- clusive of others. Single-stream Central Auditory Attention. —That without the objective audition. Multiple Synchronous Auditory Attention.— Two or more synchronous tones or sounds, or lines of such tones or sounds, are recognized by consciousness, as in the case of the or- chestra-leader who gives attention to a large number. Compound Synchronous Attention.—In this the consciousness recognizes and correlates or combines multiple streams of synchronous and diverse stimuli, visual, auditory, etc. Illus- trated by expert telegraphers, locomotive engi- neers, musicians, etc., seeing, hearing and feel- ing consciously at one instant. George M. Gould