Results 261 to 270 of about 343,489 (291)
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Dystonia: A disorder of motor programming or motor execution?
Movement Disorders, 2002AbstractFor some time, dystonia has been seen as purely a motor disorder. Relatively novel concepts published approximately 10 years ago also presumed that in the development of dystonic dyskinesias, only motor behaviour was abnormal. Neurophysiological observations of various types of dystonic disorders, which were performed using sophisticated ...
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Putamen coactivation during motor task execution
NeuroReport, 2008Models of corticostriatal motor circuitry have focused on the role of the circuit in the hemisphere of the motor cortex providing primary control (contralateral to the movement). We used functional magnetic resonance imaging and functional connectivity analyses to study circuit function in both the controlling and noncontrolling hemispheres. During the
William R, Marchand +8 more
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Understanding design fluency: Motor and executive contributions
Journal of the International Neuropsychological Society, 2009AbstractDesign Fluency (DF) is typically assumed to assess planning, cognitive flexibility, and fluency in generation of visual patterns, above and beyond contributions from motor speed (Delis, Kaplan, & Kramer, 2001; Ruff, 1998). The present study examined these assumptions, as little construct validation research has been done in the past.
Yana, Suchy +2 more
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Executive function and motor planning
2011This chapter shows that executive functions and motor planning are impaired in Williams syndrome (WS). It assesses inhibition (such as inhibition of a prepotent response) and its influence on social functioning, and evaluates how the cascading developmental effects of poor planning ability impact on the wider functioning of other aspects of cognition ...
Hudson, Kerry D., Farran, Emily K.
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Cognitive Representation of a Complex Motor Action Executed by Different Motor Systems
Minds and Machines, 2014The present study evaluates the cognitive representation of a kicking movement performed by a human and a humanoid robot, and how they are represented in experts and novices of soccer and robotics, respectively. To learn about the expertise-dependent development of memory structures, we compared the representation structures of soccer experts and robot
Lex, Heiko +3 more
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Motor Sequencing in Parkinson's Disease: Relationship to Executive Function and Motor Rigidity
Cortex, 2002Parkinson's disease (PD) is a movement disorder that also affects central cognitive processing; however, the extent to which high-order cognitive processes disrupted by PD affect complex motor function is incompletely explicated. The present analysis provides an examination of the relative contributions of simple motor versus complex cognitive ...
Rosemary, Fama, Edith V, Sullivan
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Remote effects on corticospinal excitability during motor execution and motor imagery
Neuroscience Letters, 2019We investigated the remote effect on corticospinal excitability of resting left and right hand muscles during motor execution and motor imagery when performing left or right foot plantar flexion. Fifteen right-handed subjects performed two conditions with three tasks: Condition (Motor Execution (ME) vs.
Fuka, Shironouchi +5 more
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Identifying Motor Imagery-Related Electroencephalogram Features During Motor Execution
2020Brain–computer interface technology facilitates communication and control of computers with brain signals. This technique uses motor imagery to enable a robotic arm to function as a third arm for the subject. During the process, the robotic arm must move in synchrony with the two human arms, and consequently motor imagery and motor execution must be ...
Yuki Kokai, Isao Nambu, Yasuhiro Wada
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2014 22nd Signal Processing and Communications Applications Conference (SIU), 2014
In this study, electrical activity of the brain is measured to assess the changes due to motor function, namely during motor execution and motor imagery tasks. First group of experiment covers motor execution task which subjects are required to clench the ball according to the direction of right or left arrows whereas in second group of experiment ...
Seda Nilgun Dumlu +4 more
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In this study, electrical activity of the brain is measured to assess the changes due to motor function, namely during motor execution and motor imagery tasks. First group of experiment covers motor execution task which subjects are required to clench the ball according to the direction of right or left arrows whereas in second group of experiment ...
Seda Nilgun Dumlu +4 more
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The role of motor cortex in motor sequence execution depends on demands for flexibility
Nature NeuroscienceThe role of the motor cortex in executing motor sequences is widely debated, with studies supporting disparate views. Here we probe the degree to which the motor cortex's engagement depends on task demands, specifically whether its role differs for highly practiced, or 'automatic', sequences versus flexible sequences informed by external cues.
Kevin G. C. Mizes +3 more
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