Cortical plasticity in perceptual learning demonstrated by transcranial magnetic stimulation

1998 ◽  
Vol 36 (1) ◽  
pp. 45-49 ◽  
Author(s):  
Vincent Walsh ◽  
Elisabeth Ashbridge ◽  
Alan Cowey
2019 ◽  
Vol 207 ◽  
pp. 37-47 ◽  
Author(s):  
Urvakhsh Meherwan Mehta ◽  
Milind Vijay Thanki ◽  
Jaya Padmanabhan ◽  
Alvaro Pascual-Leone ◽  
Matcheri S. Keshavan

2016 ◽  
Vol 18 (suppl_6) ◽  
pp. vi123-vi123
Author(s):  
Sandro M. Krieg ◽  
Sebastian Ille ◽  
Neal Conway ◽  
Noemi Wildschuetz ◽  
Lucia Bulubas ◽  
...  

2006 ◽  
Vol 18 (9) ◽  
pp. 1577-1585 ◽  
Author(s):  
Ahmed A. Karim ◽  
Anne Schüler ◽  
Yiwen Li Hegner ◽  
Eva Friedel ◽  
Ben Godde

Recent neuroimaging studies have revealed that tactile perceptual learning can lead to substantial reorganizational changes of the brain. We report here for the first time that combining high-frequency (15 Hz) repetitive transcranial magnetic stimulation (rTMS) over the primary somatosensory cortex (SI) with tactile discrimination training is capable of facilitating operant perceptual learning. Most notably, increasing the excitability of SI by 15-Hz rTMS improved perceptual learning in spatial, but not in temporal, discrimination tasks. These findings give causal support to recent correlative data obtained by functional magnetic resonance imaging studies indicating a differential role of SI in spatial and temporal discrimination learning. The introduced combination of rTMS and tactile discrimination training may provide new therapeutical potentials in facilitating neuropsychological rehabilitation of functional deficits after lesions of the somatosensory cortex.


2008 ◽  
Vol 586 (16) ◽  
pp. 3927-3947 ◽  
Author(s):  
Masashi Hamada ◽  
Yasuo Terao ◽  
Ritsuko Hanajima ◽  
Yuichiro Shirota ◽  
Setsu Nakatani-Enomoto ◽  
...  

2004 ◽  
Vol 100 (3) ◽  
pp. 560-564 ◽  
Author(s):  
Dirk De Ridder ◽  
Gert De Mulder ◽  
Vincent Walsh ◽  
Neil Muggleton ◽  
Stefan Sunaert ◽  
...  

✓ Tinnitus is a distressing symptom that affects up to 15% of the population for whom no satisfactory treatment exists. The authors present a novel surgical approach for the treatment of intractable tinnitus, based on cortical stimulation of the auditory cortex. Tinnitus can be considered an auditory phantom phenomenon similar to deafferentation pain, which is observed in the somatosensory system. Tinnitus is accompanied by a change in the tonotopic map of the auditory cortex. Furthermore, there is a highly positive association between the subjective intensity of the tinnitus and the amount of shift in tinnitus frequency in the auditory cortex, that is, the amount of cortical reorganization. This cortical reorganization can be demonstrated by functional magnetic resonance (fMR) imaging. Transcranial magnetic stimulation (TMS) is a noninvasive method of activating or deactivating focal areas of the human brain. Linked to a navigation system that is guided by fMR images of the auditory system, TMS can suppress areas of cortical plasticity. If it is successful in suppressing a patient's tinnitus, this focal and temporary effect can be perpetualized by implanting a cortical electrode. A neuronavigation-based auditory fMR imaging-guided TMS session was performed in a patient who suffered from tinnitus due to a cochlear nerve lesion. Complete suppression of the tinnitus was obtained. At a later time an extradural electrode was implanted with the guidance of auditory fMR imaging navigation. Postoperatively, the patient's tinnitus disappeared and remains absent 10 months later. Focal extradural electrical stimulation of the primary auditory cortex at the area of cortical plasticity is capable of suppressing contralateral tinnitus completely. Transcranial magnetic stimulation may be an ideal method for noninvasive studies of surgical candidates in whom stimulating electrodes might be implanted for tinnitus suppression.


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