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Search: authors:"P. Haggard"

5 papers found.
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Control of wrist movement in deafferented man: evidence for a mixed strategy of position and amplitude control

There is a continuing debate about control of voluntary movement, with conflicted evidence about the balance between control of movement vectors (amplitude control) that implies knowledge of the starting position for accuracy, and equilibrium point or final position control, that is independent of the starting conditions. We tested wrist flexion and extension movements in a man...

Laser-Evoked Vertex Potentials Predict Defensive Motor Actions

The vertex potential is the largest response that can be recorded in the electroencephalogram of an awake, healthy human. It is elicited by sudden and intense stimuli, and is composed by a negative–positive deflection. The stimulus properties that determine the vertex potential amplitude have been well characterized. Nonetheless, its functional significance remains elusive. The...

Risk factors for failing the hearing screen due to otitis media in Dutch infants

444, 3300 AK Zwijndrecht, The Netherlands 3 Hearing loss Infants 4 M. P. Haggard MRC Multicentre Otitis Media Study Group, Department of Experimental Psychology, University of Cambridge , Cambridge, UK

Action Observation and Acquired Motor Skills: An fMRI Study with Expert Dancers

When we observe someone performing an action, do our brains simulate making that action? Acquired motor skills offer a unique way to test this question, since people differ widely in the actions they have learned to perform. We used functional magnetic resonance imaging to study differences in brain activity between watching an action that one has learned to do and an action that...

Spectral and Temporal Processing in Human Auditory Cortex

Hierarchical processing suggests that spectrally and temporally complex stimuli will evoke more activation than do simple stimuli, particularly in non-primary auditory fields. This hypothesis was tested using two tones, a single frequency tone and a harmonic tone, that were either static or frequency modulated to create four stimuli. We interpret the location of differences in...