What's the difference between dextral and sinistral?
Dextral
Definition:
(a.) Right, as opposed to sinistral, or left.
Example Sentences:
(1) Patients were divided into dextral (consistent use of right hand) and nondextral (any use of the left hand) groups.
(2) EPs to strobe flashes and rCBF were simultaneously measured in 19 dextral normal adults during a mental rotation task and during a control task involving similar stimulation and response requirements.
(3) The existence of different forms of cerebral organization in dextrals is discussed.
(4) Dextral (right-handed) patients tended to have better performance; this effect was marked in the first-episode sample, especially on verbal tests.
(5) When immediate relatives of the original subject pool were tested on hypnotic susceptibility level, sinistral relatives scored lower in susceptibility than dextral relatives.
(6) Dextrals, 30 men and 30 women, performed a parafoveal task which had been previously demonstrated to show no visual-field advantage.
(7) All dextrals and those sinistral subjects who used the right hand in acquisition showed superior transfer to the identical maze.
(8) A probe evoked potentials procedure was used to assess the relative engagement of both cerebral hemispheres during a language task in the following four groups of dextral adults: left hemisphere (LH)-damaged aphasics recovering from stroke, dysarthrics, right hemisphere (RH)-damaged nonaphasic patients, and normal control subjects.
(9) The mean difference between the two groups was significant, suggesting that pure dextrals are better marksmen than crossed dextrals early in training.
(10) After a series of learning trials, delayed recall of figure placement was obtained in 12 healthy dextral adults.
(11) Of the 34 subjects, 17 were classified as pure dextrals (right-hand, right-eye), while the other 17 were labeled crossed dextrals (right-hand, left-eye).
(12) Support for this theory was obtained by comparing the use of autoerotic fantasy and imagery in another group distinguished by their degree of cerebral lateralization: dextral vs. sinistral males.
(13) We now report a study using subjects selected according to criteria similar to those of Tankle and Heilman, and find under these conditions that sinistrals are indeed significantly inferior to dextrals.
(14) Females and dextrals made more correct responses than males or sinistrals.
(15) Both dextrals and sinistrals showed the same overall pattern deviation: in the tactile scanning task, both right and left hands deviated to the left of the midpoint and in the kinesthetic scanning tasks, the right hand deviated to the left and the left hand to the right of the midpoint.
(16) According to our clinical observations from various aspects of stroke patients, such as the total incidence of aphasia, the incidence of aphasia after left brain damage of the dextrals, the aphasia that occurs in patients without hemiplegia, and the types of aphasia, a much higher incidence of crossed aphasia is seen among the stroke patients of the Han (the largest ethnic group in China) as compared with the Uighur-Kazaks (U-K) in China and the Occidentals documented in the literature.
(17) In a young man with Recklinghausen's disease a large dextral wing-of-sphenoid meningioma and a spinal meningioma were extirpated at an interval of one month.
(18) This far-left-side disadvantage may reflect a difficulty (for dextrals) in focussing covert attention in the far-left part of space for a block of trials.
(19) Comparison of the right and left joints indicated that the dexterous side (dextral in all cases) moved more favorably.
(20) 34 males, right-handed (dextral) subjects (M age = 21.5 yr.) were classified on the basis of eyedness.
Sinistral
Definition:
(a.) Of or pertaining to the left, inclining to the left; sinistrous; -- opposed to dextral.
(a.) Having the whorls of the spire revolving or rising to the left; reversed; -- said of certain spiral shells.
Example Sentences:
(1) Simple genetic factors do not appear to be responsible for these sinistral tendencies.
(2) Sixty right-handed subjects, divided into four groups of 15 according to sex and familial sinistrality (FS), performed a test of language lateralization.
(3) When immediate relatives of the original subject pool were tested on hypnotic susceptibility level, sinistral relatives scored lower in susceptibility than dextral relatives.
(4) The relations of hand performance to the degree of left-hand preference, and left- minus right-hand performance were studied in left-handed male and female subjects considering familial sinistrality and writing hand.
(5) Controlling for age and family size, a significant effect for degree of familial sinistrality was found in the girls but not in the boys.
(6) Self-reported parental sinistrality was more common in respondents with a consistent left hand preference.
(7) All dextrals and those sinistral subjects who used the right hand in acquisition showed superior transfer to the identical maze.
(8) It is argued that the right hemisphere is more specifically organised in strong sinistrals than the general model would predict.
(9) In contrast, the P1 and P2 asymmetries were uninfluenced by lexical class or familial sinistrality.
(10) Support for this theory was obtained by comparing the use of autoerotic fantasy and imagery in another group distinguished by their degree of cerebral lateralization: dextral vs. sinistral males.
(11) Familial sinistrality and hand posture, on the whole, did not influence tapping performances.
(12) Thirty-one children with right (n = 18) and left (n = 13) congenital hemiplegia were compared for incidence of hand- and foot-preference, eye-dominance, and familial sinistrality.
(13) We now report a study using subjects selected according to criteria similar to those of Tankle and Heilman, and find under these conditions that sinistrals are indeed significantly inferior to dextrals.
(14) Females and dextrals made more correct responses than males or sinistrals.
(15) Both dextrals and sinistrals showed the same overall pattern deviation: in the tactile scanning task, both right and left hands deviated to the left of the midpoint and in the kinesthetic scanning tasks, the right hand deviated to the left and the left hand to the right of the midpoint.
(16) A comparison of the incidence of FS in mentally retarded and nonretarded samples indicated that a positive history of familial sinistrality (FS+) was significantly more likely to occur in mildly retarded individuals.
(17) This study assessed possible influences of handedness, sex, familial sinistrality (FS), and self-rated androgyny on language laterality and on spatial and verbal test performances of 225 right-handers and 134 left-handers.
(18) Sinistral portal hypertension is a clinical syndrome of splenic vein thrombosis caused by pancreatic pathology and manifests as bleeding gastric varices in patients with a patent portal vein and normal hepatic function.
(19) Guidelines for management of pancreatic trauma are (1) resection of sinistral gland for perforating injuries of the body or tail; (2) drainage of perforations of the pancreatic head when the major duct is intact; (3) resection of duodenum and pancreatic head for devitalizing injury of both structures.
(20) Such a "gastrosplenic artery" leaves the main trunk of the splenic artery in its middle segment in cranio--sinistral direction and falls apart into a posterior gastric and a superior splenic branch both with various differences in caliber.