Preparatory EMG Activity Reveals a Rapid Adaptation Pattern in Humans Performing Landing Movements in Blindfolded Condition
The main questions addressed in this work were whether and how adaptation to suppression of visual information occurs in a free-fall paradigm, and the extent to which vision availability influences the control of landing movements. The prelanding modulation of EMG timing and amplitude of four lower-...
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| Veröffentlicht in: | Perceptual and motor skills 2009-10, Vol.109 (2), p.500-516 |
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| creator | Magalhães, Fernando Henrique Goroso, Daniel Gustavo |
| description | The main questions addressed in this work were whether and how adaptation to suppression of visual information occurs in a free-fall paradigm, and the extent to which vision availability influences the control of landing movements. The prelanding modulation of EMG timing and amplitude of four lower-limb muscles was investigated. Participants performed six consecutive drop-landings from four different heights in two experimental conditions: with and without vision. Experimental design precluded participants from estimating the height of the drop. Since cues provided by proprioceptive and vestibular information acquired during the first trials were processed, the nervous system rapidly adapted to the lack of visual information, and hence produced a motor output (i.e., prelanding EMG modulation) similar to that observed when performing the activity with vision available. |
| doi_str_mv | 10.2466/pms.109.2.500-516 |
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| subjects | Adult Analysis of Variance Cues Electromyography Human performance Humans Male Motor ability Motor Activity - physiology Movement Movement - physiology Muscular system Postural Balance - physiology Proprioception - physiology Psychomotor Performance - physiology Signal Processing, Computer-Assisted Vision, Ocular - physiology Visual Perception - physiology Weight-Bearing - physiology |
| title | Preparatory EMG Activity Reveals a Rapid Adaptation Pattern in Humans Performing Landing Movements in Blindfolded Condition |
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