Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"motor preparation"”.
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Motor preparation and the auditory startle response
… be prepared in advance. Although evidence for motor preparation has been shown at cortical and spinal levels, motor preparation at a subcortical level is not well described. One line of inquiry has involved the use of a startling acoustic stimulus (115-124 dB) that can act as an early trigger …
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Optimal anticipatory control as a theory of motor preparation
… experiments, the prevailing theory of neural motor control holds that movement generation is accomplished by a preparatory process that progressively steers the state of the motor cortex into a movement-specific optimal subspace prior to movement onset. The state of the cortex then evolves …
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EXPLORING COVERT MOTOR PROCESSES: BEHAVIORAL INSIGHTS AND INNOVATIVE APPLICATIONS OF TRANSCRANIAL MAGNETIC STIMULATION
… and behavioral mechanisms underlying covert motor processes, building on a well-established body of research on motor imagery, motor preparation, and action observation. Traditional methods have primarily relied on the 1 muscle × 1 action (1m1a) approach, in which transcranial magnetic …
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Transitioning Between Preparatory and Precisely Sequenced Neuronal Activity in Production of a Skilled Motor Behavior
… in the brain remains unclear. In songbirds, premotor projection neurons in the cortical song nucleus HVC are necessary for producing learned song and exhibit precise sequential activity during singing. Using cell-type specific calcium imaging we identify populations of HVC premotor neurons …
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Optogenetic disruption of memory-drive, oculomotor behavior in the non-human primate
… stimulus presentation, the delay interval, and motor preparation. It is unclear, though, whether FEF activity during each epoch is necessary for memory-guided saccade execution. To address this question, techniques for millisecond-precise optical inactivation of the primate brain were invented. …
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Voluntary Action and Conscious Intention
… and how that process relates to awareness of motor preparation through a combination of EEG analysis and computational modeling. In the third study, I showed that pupil dilations before spontaneous movements reflect the transition into awareness of motor intentions and are predictive of …
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Role of rat medial prefrontal cortex in time interval estimation
… might actually represent sensory response- or motor preparation-related one. These results suggest the rodent mPFC represents the elapse of time based on linearly changing neuronal activity on a logarithmic scale, which might be the reason why the precision of time interval discrimination is …
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Rule-dependent and stimulus-dependent visuomotor mappings of other's actions
… in stimulus-dependent and rule-dependent visuomotor associations. In the first experiment we demonstrated a biphasic time-course of motor cortical excitability during a counter-imitative task: a stimulus-dependent automatic simulation at 150 ms from the stimulus onset and a rule-dependent …
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Mechanisms of Value-Biased Prioritization in Fast Sensorimotor Decision Making
<p>In dynamic environments, split-second sensorimotor decisions must be prioritized according to potential payoffs to maximize overall rewards. The impact of relative value on deliberative perceptual judgments has been examined extensively, but relatively little is known about value-biasing …
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Motor imagery classification using sparse representation of EEG signals
… and potentially back to the body. Classifying motor imagery brain signals where the signals are obtained based on imagined movement of the limbs is a major, yet very challenging, step in developing Brain Computer Interfaces (BCIs). Of primary importance is to use less data and computationally …