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Repetitive peripheral magnetic stimulation alleviates tactile extinction
B Heldmann1, G Kerkhoff, A Struppler
1Department of Psychiatry, Technical University of Munich, München, Germany.
Neuroreport
|October 24, 2000
Summary
Repetitive peripheral magnetic stimulation (RPMS) significantly reduced tactile extinction in patients with right brain damage by increasing sensory input. This suggests RPMS may offer a new treatment for tactile extinction and related sensorimotor deficits.
Area of Science:
- Neuroscience
- Rehabilitation Medicine
- Neuropsychology
Background:
- Tactile extinction, common after right brain damage, has poorly understood mechanisms and no available treatments.
- PET scans show reduced metabolism in the somatosensory cortex of patients with tactile extinction.
- The sensorimotor cortex exhibits plasticity, reorganizing in response to altered sensory input.
Purpose of the Study:
- To investigate the effects of repetitive peripheral magnetic stimulation (RPMS) on tactile extinction in patients with right-hemisphere damage.
- To explore sensory stimulation as a potential therapeutic approach for tactile extinction.
Main Methods:
- Fourteen patients with right-hemisphere damage and tactile extinction were randomized into an experimental group and a control group.
- The experimental group received RPMS on the left forearm and attentional cueing.
- The control group was tested twice without intervention to control for learning effects.
Main Results:
- RPMS significantly reduced left-sided tactile extinction errors in the experimental group.
- Attentional cueing did not significantly affect left-sided extinction but increased right-hand extinction errors.
- The control group showed stable extinction scores, confirming the intervention's effect.
Conclusions:
- Sensory inflow, modulated by RPMS, plays a crucial role in tactile extinction.
- RPMS shows promise as a rehabilitation strategy for patients suffering from tactile extinction.