Using hand performance measures to predict handedness

Brown, Susan G.; Roy, Éric; Rohr, Linda E.; Bryden, Pamela J.

doi:10.1080/1357650054200000440

Cited by 102 publications

(95 citation statements)

References 6 publications

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“…In spite of these differences, the overall effect estimate of 12.51% (7.16-17.86% C.I. ) supports the results of Gonzalez and colleagues (2006; and Brown, Roy, Rohr, & Bryden (2006). The overall mean difference estimate is a 12.5% larger bias in the dextral population.…”

Section: Methodssupporting

confidence: 77%

“…Of course, some of samples in the meta analysis of study 3 may (and do) overlap, which might add to some of the heterogeneity obtained. In addition, the strongest weight means effects are largely from the LEGO puzzle making experiments, with the exception of Brown (2006), which utilised the "WatHand Cabinet Test" of Pamela Bryden and her colleagues, which requires several grasping tasks (some of which, as they acknowledge, require practiced actions after the grasp such as throwing, which is right hand lateralised in many left handers, see Peters, 1990). Many of the other hand choice tasks have stricter testing conditions which require the use of one hand at a time (such as our pointing task in study 2), which may lead, in some participants, to demand characteristics driving more equivalent use of both hands than might be the case in less constrained non-experimental conditions.…”

Section: Discussion -Studymentioning

confidence: 99%

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One hand or the other? Effector selection biases in right and left handers

Main

Carey

2014

Neuropsychologia

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Much debate in the handedness literature has centred on the relative merits of questionnaire-based measures assessing hand preference versus simple movement tasks such as peg moving or finger tapping, assessing hand performance. A third paradigm has grown in popularity, which assesses choices by participants when either hand could be used to execute movements. These newer measures may be useful in predicting possible "reversed" asymmetries in proportions of non-right handed ("adextral") people. In the current studies we examine hand choice in large samples of dextral (right handed) and adextral participants. Unlike in some previous experiments on choice, we found that left handers were as biased towards their dominant hand as were right handers, for grasping during a puzzle-making task (study 1). In a second study, participants had to point to either of two suddenly appearing targets with one hand or the other. In study 2, left handers were not significantly less one handed than their right-handed counterparts as in study 1. In a final study, we used random effects meta analysis to summarise the possible differences in hand choice between left handers and right handers across all hand choice studies published to date. The meta analysis suggests that right handers use their dominant hand 12.5% more than left handers favour their dominant hand (with 95% confidence that the real difference lies between 7 and 18%). These last results suggests that our two experiments reported here may represent statistical Type 2 errors. This mean difference may be related to greater left hemispheric language and praxic laterality in right handers. Nevertheless, more data are needed regarding the precise proportions of left and right handers who favour their preferred hands for different tasks.

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Section: Methodssupporting

confidence: 77%

Section: Discussion -Studymentioning

confidence: 99%

One hand or the other? Effector selection biases in right and left handers

Main

Carey

2014

Neuropsychologia

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“…Previous studies have mainly reported the total number of tappings in a certain test period (13)(14)(15)(16)(17)(18)(19)(20)23) and the tapping speed (6,25). Kauranen et al (25) compared patients with rheumatoid arthritis (RA) to healthy individuals and found no significant differences in the finger-tapping values of the groups.…”

Section: Discussionmentioning

confidence: 99%

“…The finger-tapping test provides information about the control and coordination of distal muscle groups in the upper limbs (23,24). Previous studies have mainly reported the total number of tappings in a certain test period (13)(14)(15)(16)(17)(18)(19)(20)23) and the tapping speed (6,25).…”

Section: Discussionmentioning

confidence: 99%

Advanced analysis of finger-tapping performance: A preliminary study

Barut¹,

Kızıltan²,

Gelir³

et al. 2012

Balkan Med J

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The finger-tapping (FT) test has been used for almost a century to evaluate muscle control and motor ability in the upper extremities (1). This task is frequently used to quantitatively evaluate patients with Parkinson's disease (1), ataxia (2), Alzheimer's disease (3), and Korsakoff syndrome (4), as well as in individuals who have suffered an acute stroke (5). Moreover, the finger-tapping test is widely used to evaluate motor function in the upper limbs (6-8) and the relationship between hand preference and hand skill (9) in healthy individuals and to assess hand skill and coordination (10-12) for occupations in which the hands are essential. The finger-tapping test is also used for psychomotor evaluations (13)(14)(15)(16)(17)(18)(19)(20).The movement involved in single-finger tapping is complex and is affected by visual and auditory stimuli, emotional and physical health, and factors that impact the skeletal and nervous systems. The characterisation of finger-tapping by an average tapping interval or by a tapping rate can only provide a limited amount of information. However, constructing a mathematical function that has the best fit to a series of data points obtained for a complex movement possibly helps to understand the nature of the movement.Various techniques have been used to record the number of tappings in a certain test period and the average time passed between tappings (intertap-interval) in the fingertapping test, including a mechanical counter, an electronic switch, a telegraph key, and a computer keyboard associated with word processing software (7,8). However, the time resolution of these systems is either low or unpredictable. The ability of a system to determine only an average intertap-interval or a tapping speed for a complicated movement results in poor time resolution and carries no information on the time course of the movement. Previous studies on this topic have not considered the temporal changes that occur between consecutive tapping. Therefore, the present study evaluated the time course of average intertap-interval values and the patterns of variation in both the right and left hands of right-handed subjects using the TanTong Finger-Tap system (21,22 The finger-tapping test is a commonly employed quantitative assessment tool used to measure motor performance in the upper extremities. This task is a complex motion that is affected by external stimuli, mood and health status. The complexity of this task is difficult to explain with a single average intertap-interval value (time difference between successive tappings) which only provides general information and neglects the temporal effects of the aforementioned factors.

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“…Specifically, there is some debate over whether handedness represents a qualitative trait made up of discrete groups of right-and left-handed individuals or whether handedness lies on a continuum from strongly left-to strongly righthanded individuals (e.g., Brown, Roy, Rohr, & Bryden, 2006;Corey, Hurley, & Foundas, 2001). To address this potential issue, we correlated the average HI score with each of the seven CC regions and the overall CC residual.…”

Section: Correlations Between Mean Hand Use and CC Morphologymentioning

confidence: 99%

Sex and handedness effects on corpus callosum morphology in chimpanzees (Pan troglodytes).

Dunham¹,

Hopkins²

2006

Behavioral Neuroscience

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Findings suggest that in humans, sex and hand preference may be associated with the size of the corpus callosum (CC). The authors measured CC morphology from MRIs in 67 chimpanzees (Pan troglodytes) to see whether similar effects were present in this species. Hand preference was assessed by performance on 4 tasks, and chimpanzees were classified as left-handed, right-handed, or ambidextrous. In a subsequent analysis, the chimpanzees were reclassified into 2 groups: righthanded and left-handed. The results revealed no sex difference in CC area, but significant effects of hand preference were found for several CC regions (rostrum body, anterior midbody, posterior midbody, isthmus, and splenium) and for overall CC size, with left-handed chimpanzees exhibiting significantly smaller CC measurements than right-handed chimpanzees. The results indicate that lateralized hand use in chimpanzees, as in humans, is associated with variation in CC size. Keywords Pan troglodytes; corpus callosum; handednessThe corpus callosum (CC) is the major set of fibers connecting homologous and heterologous cortical regions in the left and right cerebral hemispheres as well as some subcortical structures of the brain (Bermudez & Zatorre, 2001;Gazzaniga, 2000). Its presence allows for interhemispheric communication of sensory and motor functions within the brain. Previous research has shown that projections through the CC proceed on an anterior-to-posterior gradient that roughly connects cortical regions from the frontal to occipital lobe (Witelson, 1989). The morphology of the CC has been the topic of considerable debate, particularly as it relates to sex differences and lateralization (Byne, Bleier, & Houston, 1988;Denenberg, Kertesz, & Cowell, 1991;Driesen & Raz, 1995;Habib et al., 1991;Jancke & Steinmetz, 1998;Peters et al., 2002;Westerhausen et al., 2003).The presence of a sexual dimorphism in the human CC was first reported by de LacosteUtamsing and Holloway (1982). In their study, de Lacoste-Utamsing and Holloway found that women had a larger and more bulbous splenium (posterior fifth of the CC) than did men. Furthermore, de Lacoste-Utamsing and Holloway found that when brain weight was accounted for, women had a larger overall CC. Significant findings of a dimorphism favoring a larger total CC area or regional CC area in female humans have been reported in subsequent studies on cadaver specimens as well as from in vivo imaging studies (Achiron, Lipitz, & Achiron, 2001;Bermudez & Zatorre, 2001;Burke & Yeo, 1994 Innocenti, 1989;Witelson, 1989); however, several studies have found no evidence of sex differences in the size of the CC (Bishop & Wahlsten, 1997;Driesen & Raz, 1995;Habib et al., 1991;Horton, Crawford, Harrington, & Downs, 2004;Witelson, 1985).In addition to sex differences in CC morphology, the relationship between handedness and CC morphology has also been considered. In one of the earliest studies, Witelson (1985) found that mixed-handed individuals (those who did not consistently use their right hand for specifi...

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Using hand performance measures to predict handedness

Cited by 102 publications

References 6 publications

One hand or the other? Effector selection biases in right and left handers

One hand or the other? Effector selection biases in right and left handers

Advanced analysis of finger-tapping performance: A preliminary study

Sex and handedness effects on corpus callosum morphology in chimpanzees (Pan troglodytes).

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