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Does somatosensory loss induce adaptation of the gait initiation process?
- Source :
- Neuroscience Letters, Neuroscience Letters, 2010, 480 (3), pp.178-181. ⟨10.1016/j.neulet.2010.06.017⟩, Neuroscience Letters, Elsevier, 2010, 480 (3), pp.178-181. ⟨10.1016/j.neulet.2010.06.017⟩
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- International audience; Gait initiation (GI) is the transient period between posture and movement. Its central programming takes into account the environmental constraints as well as the constraints induced by the body itself. Patients with peripheral sensory neuropathies display a severe proprioceptive deficit leading to balance and gait impairments and rely on a variety of compensatory mechanisms and are known to be dependent on vision. GI was studied on eight healthy subjects and five patients in order to assess the effect of somatosensory loss on the different phases of GI, combined with a manipulation of the visual inputs. Our main hypothesis is that the proprioceptive deficit would induce an adaptation of the GI process, especially when modifying the lower part of peripheral vision. The results show that the pathology induces some adaptations of the GI process, characterized by a decrease of the motor performance (assessed by the maximal anteroposterior velocity of the center of gravity at the end of the first step), a decrease in the spatial parameters (assessed by the peak amplitude of the backward shift of the center of foot pressure during the anticipation phase and the length of the first step), and a non-modification of the temporal parameters (assessed by the duration of the anticipation phase and of the first step). The suppression of the lower part of peripheral vision has no effect on the GI process. The role of the lower part of peripheral vision seems therefore to be less critical for GI, than for balance and locomotion.
- Subjects :
- Adult
Male
medicine.medical_specialty
Ataxia
[SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging
Sensory system
Analyse du Mouvement en Biomécanique Physiologie et Imagerie
Somatosensory system
050105 experimental psychology
03 medical and health sciences
0302 clinical medicine
Physical medicine and rehabilitation
Gait (human)
Initiation of movement
Center of gravity and foot pressure
[SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO]
medicine
Humans
0501 psychology and cognitive sciences
[PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph]
Gait Disorders, Neurologic
Balance (ability)
General Neuroscience
05 social sciences
Peripheral Nervous System Diseases
Middle Aged
Adaptation, Physiological
Anticipation
Surgery
Peripheral
Peripheral vision
Somatosensory Disorders
Female
medicine.symptom
Psychology
human activities
Photic Stimulation
Psychomotor Performance
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 03043940
- Volume :
- 480
- Database :
- OpenAIRE
- Journal :
- Neuroscience Letters
- Accession number :
- edsair.doi.dedup.....c27d7578015381774d026a60757b628e