Hemispheric control of unilateral and bilateral movements of proximal and distal parts of the arm as inferred from simple reaction time to lateralized light stimuli in man

Stefano, M. Di; Morelli, Maria Sole; Marzi, C.A.; Berlucchi, Giovanni

doi:10.1007/bf00236741

Cited by 104 publications

(36 citation statements)

References 23 publications

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“…Neurophysiological studies suggesting that the distal musculature is controlled mainly from the contralateral hemisphere (e.g. Kuypers and Brinkman 1970, Brinkman and Kuypers 1973, DiStefano et al 1980, combined with the present finding of increased time in contact with the contra-lesional hand, corroborate earlier findings (Steenbergen et al 1998) suggesting that it is particularly the force regulation of the distal musculature that is disturbed at the contra-lesional side.…”

Section: Discussionsupporting

confidence: 90%

Control of prehension in hemiparetic cerebral palsy: similarities and differences between the ipsi‐ and contra‐lesional sides of the body

Steenbergen

Kamp

2004

Develop Med Child Neuro

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This study aimed at broadening our insight into ipsi-and contra-lesional control of prehension after unilateral brain damage. Six male adults with hemiparetic cerebral palsy (mean age 17 years 3 months, SD 15 months) performed unrestricted grasping of discs that differed in size (40, 60, and 80mm in diameter) and which were placed at different distances from the participants (150mm and 30mm). A precalibrated Optotrak 3020 system was used for recording motion. Kinematics of the transport and grasp component, and hand orientation at the moment of grasping, were determined. A marker on the wrist was used to calculate the kinematics of the transport component. The distance between the markers on the index finger and thumb was used for the calculation of the grasp component. Kinematic variables of the transport and grasp component were remarkably similar between both sides of the body. However, with the contralesional side, more time was spent in contact with the object before it was lifted, and movements were performed less fluently compared with the ipsi-lesional side. Maximum grasp aperture was attained very late during reaching. For final hand orientation, results showed a large standard deviation both within and between participants. These findings show that, despite the ostensible awkward prehension movements of the contra-lesional side (slowness and decreased fluency), similarities in the kinematics between both sides of the body are present, which may be indicative of intact central control of the movement. The results of variant final hand orientation, combined with the relative late occurrence of peak aperture, suggest that these participants encounter difficulties with forward planning and may use a step-by-step control strategy.

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Section: Discussionsupporting

confidence: 90%

Control of prehension in hemiparetic cerebral palsy: similarities and differences between the ipsi‐ and contra‐lesional sides of the body

Steenbergen

Kamp

2004

Develop Med Child Neuro

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“…This slowing down of motor responses during bimanual movements was previously reported for normal subjects [13][14][15][16][17] and is known as bilateral deficit. Two possible mechanisms have been suggested to explain this result: division of attention and interhemispheric inhibition [18,19].…”

Section: Discussionsupporting

confidence: 71%

Manual reaction times and brain dynamics after ‘awake surgery’ of slow-growing tumours invading the parietal area. A case report

et al. 2012

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Primary objectives: Awake surgeries of slow growing tumors invading the brain and guided by direct electrical stimulation are accompanied by major brain reorganisations followed with slight impairments post-operatively. In most cases, these deficits are so slight after a few days that they are often not detectable on classical neuropsychological evaluations. Consequently, we investigated whether simple visuo-manual reaction times paradigms would sign some level of functional asymmetries between both hemispheres. Importantly, the visual stimulus was located in the saggital plan in order to limit attentional biases and to focus mainly on the interhemispheric asymmetry. Methods and procedures: Three patients (aged of 41, 59 and 59 years) after resections in parietal regions and a control group (age=44, SD 6.9) were compared during simple uni and bimanual reaction times (RTs).

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Section: Discussionmentioning

confidence: 99%

“…Kuypers and Brinkman 1970;Brinkman and Kuypers 1973;Di Stefano et al 1980;Aglioti et al 1993; for an overview see Wiesendanger et al 1994). Di Stefano et al (1980) found "crossed-uncrossed" differences for distal bimanual responses to a lateralized flash, but not for proximal bimanual responses. These authors argue that control of the crossed distal musculature utilizes interhemispheric transfer, whereas control of the proximal musculature does not (see also Kuypers and Brinkman 1970;Brinkman and Kuypers 1973).…”

Section: Discussionmentioning

confidence: 99%

Bimanual movement coordination in spastic hemiparesis

et al. 1996

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A Fitts' task was used to examine whether the large movement asymmetry in subjects with spastic hemiparesis can be reduced or eliminated when both limbs are required to perform functionally equivalent tasks. Furthermore, it was determined whether any such benefit was expressed as mutual accommodation, or whether one hand "slaves" the other. Finally, the effect of increased task constraints on the magnitude of the asymmetry was considered. A group of ten students served as controls. Subjects had to grasp small balls and subsequently place them into holes. As expected, large total response time differences were present between the hands of the hemiparetic subjects in the unimanual conditions. However, 92% of the difference between hands was eliminated in the bimanual conditions. It is argued that the observed temporal invariance, or time locking, between hands in the bimanual conditions might be facilitated through the activity of bilateral controls exerted from each hemisphere and neural crosstalk at different levels of the central nervous system. Still, an asymmetric tendency remained in the bimanual conditions: a tendency existed for the impaired hand to reach the "target" later in time compared with the dominant hand. This tendency was enlarged as the asymmetry in task demands for the two limbs increased.

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Hemispheric control of unilateral and bilateral movements of proximal and distal parts of the arm as inferred from simple reaction time to lateralized light stimuli in man

Cited by 104 publications

References 23 publications

Control of prehension in hemiparetic cerebral palsy: similarities and differences between the ipsi‐ and contra‐lesional sides of the body

Control of prehension in hemiparetic cerebral palsy: similarities and differences between the ipsi‐ and contra‐lesional sides of the body

Manual reaction times and brain dynamics after ‘awake surgery’ of slow-growing tumours invading the parietal area. A case report

Bimanual movement coordination in spastic hemiparesis

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