scholarly journals The Role of Contralesional Dorsal Premotor Cortex after Stroke as Studied with Concurrent TMS-fMRI

2010 ◽  
Vol 30 (36) ◽  
pp. 11926-11937 ◽  
Author(s):  
S. Bestmann ◽  
O. Swayne ◽  
F. Blankenburg ◽  
C. C. Ruff ◽  
J. Teo ◽  
...  
Keyword(s):  
Premotor Cortex ◽  
Dorsal Premotor Cortex

Role of the Dorsal Premotor Cortex in Rhythmic Auditory-Motor Entrainment: A Perturbational Approach by rTMS

2012 ◽  
Vol 24 (4) ◽  
pp. 1009-1016 ◽  
Author(s):  
F. Giovannelli ◽  
I. Innocenti ◽  
S. Rossi ◽  
A. Borgheresi ◽  
A. Ragazzoni ◽  
...  
Keyword(s):  
Premotor Cortex ◽  
Dorsal Premotor Cortex

scholarly journals Complex modulation of fingertip forces during precision grasp and lift after theta burst stimulation over the dorsal premotor cortex

2017 ◽  
Vol 74 (6) ◽  
pp. 526-535
Author(s):  
Dragana Drljacic ◽  
Sanja Pajic ◽  
Aleksandar Nedeljkovic ◽  
Sladjan Milanovic ◽  
Tihomir Ilic
Keyword(s):  
Motor Control ◽  
Premotor Cortex ◽  
Fine Motor ◽  
Dominant Hand ◽  
Dorsal Premotor Cortex ◽  
Grasp Stability ◽  
Precision Grasping ◽  
Fingertip Forces ◽  
Theta Burst

Background/Aim. Adaptive control and fingertip force synchronization of precise grasp stability during unimanual manipulation of small objects represents an illustrative example of highly fractionated movements that are foundation of fine motor control. It is assumed that this process is controlled by several motor areas of the frontal lobe, particularly applicable to the primary motor (M-1) and dorsal premotor cortex (PMd). Aiming to examine the role of PMd during fine coordination of fingertip forces we applied theta burst repetitive magnetic stimulation (TBS) to disrupt neural processing in that cortical area. Methods. Using a single-blind, randomized, crossover design, 10 healthy subjects (29 ? 3.9 years) received single sessions of continuous TBS (cTBS600), intermittent TBS (iTBS600), or sham stimulation, separate from one another at least one week, over the PMd region of dominant hemisphere. Precision grasp and lift were assessed by instrumented device, recording grip (G) and load (L) forces, during three manipulation tasks (ramp-and-hold, oscillation force producing and simple lifting tasks), with each hand separately, before and after interventions. Results. We observed the improvement of task performance related to constant error (CE) in oscillation task with the dominant hand (DH) after the iTBS (p = 0.009). On the contrary, the cTBS reduced variable error (VE) for non-dominant hand (NH), p = 0.005. Considering force coordination we found that iTBS worsened variables for NH (G/L ratio, p = 0.017; cross-correlation of the G and L, p = 0.047; Gain, p = 0.047). Conclusion. These results demonstrate the ability of TBS to modulate fingertip forces during precision grasping and lifting, when applied over PMd. These findings support the role of PMd in human motor control and forces generation required to hold small objects stable in our hands.

scholarly journals Improving online and offline gain from repetitive practice using anodal tDCS at dorsal premotor cortex

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Taewon Kim ◽  
John J. Buchanan ◽  
Jessica A. Bernard ◽  
David L. Wright
Keyword(s):  
Direct Current ◽  
Sequence Learning ◽  
Transcranial Direct Current Stimulation ◽  
Premotor Cortex ◽  
Anodal Tdcs ◽  
Motor Sequence Learning ◽  
Motor Sequence ◽  
Dorsal Premotor Cortex ◽  
Recent Claim

AbstractAdministering anodal transcranial direct current stimulation at the left dorsal premotor cortex (PMd) but not right PMd throughout the repetitive practice of three novel motor sequences resulted in improved offline performance usually only observed after interleaved practice. This gain only emerged following overnight sleep. These data are consistent with the proposed proprietary role of left PMd for motor sequence learning and the more recent claim that PMd is central to sleep-related consolidation of novel skill memory.

scholarly journals Testing the Role of Dorsal Premotor Cortex in Auditory-Motor Association Learning Using Transcranical Magnetic Stimulation (TMS)

PLoS ONE ◽  
2016 ◽  
Vol 11 (9) ◽  
pp. e0163380 ◽  
Author(s):  
Carlotta Lega ◽  
Marianne A. Stephan ◽  
Robert J. Zatorre ◽  
Virginia Penhune
Keyword(s):  
Magnetic Stimulation ◽  
Premotor Cortex ◽  
Dorsal Premotor Cortex ◽  
Association Learning ◽  
Motor Association

scholarly journals Repetitive TMS Suggests a Role of the Human Dorsal Premotor Cortex in Action Prediction

2012 ◽  
Vol 6 ◽  
Author(s):  
Waltraud Stadler ◽  
Derek V. M. Ott ◽  
Anne Springer ◽  
Ricarda I. Schubotz ◽  
Simone Schütz-Bosbach ◽  
...  
Keyword(s):  
Premotor Cortex ◽  
Action Prediction ◽  
Dorsal Premotor Cortex ◽  
Repetitive Tms

scholarly journals Melodic Priming of Motor Sequence Performance: The Role of the Dorsal Premotor Cortex

2016 ◽  
Vol 10 ◽  
Author(s):  
Marianne A. Stephan ◽  
Rachel Brown ◽  
Carlotta Lega ◽  
Virginia Penhune
Keyword(s):  
Premotor Cortex ◽  
Motor Sequence ◽  
Dorsal Premotor Cortex ◽  
Sequence Performance

scholarly journals The Role of the Dorsal Premotor Cortex in Skilled Action Sequences

2016 ◽  
Vol 36 (25) ◽  
pp. 6599-6601 ◽  
Author(s):  
Oleg Solopchuk ◽  
Andrea Alamia ◽  
Alexandre Zénon
Keyword(s):  
Premotor Cortex ◽  
Dorsal Premotor Cortex ◽  
Action Sequences ◽  
Skilled Action

Organization of Action Sequences and the Role of the Pre-SMA

2004 ◽  
Vol 91 (2) ◽  
pp. 978-993 ◽  
Author(s):  
Steve W. Kennerley ◽  
K. Sakai ◽  
M.F.S. Rushworth
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Magnetic Stimulation ◽  
Motor Behavior ◽  
Repetitive Transcranial Magnetic Stimulation ◽  
Premotor Cortex ◽  
Special Role ◽  
Dorsal Premotor Cortex ◽  
Key Press ◽  
Action Sequences

To understand the contribution of the human presupplementary motor area (pre-SMA) in sequential motor behavior, we performed a series of finger key-press experiments. Experiment 1 revealed that each subject had a spontaneous tendency to organize or “chunk” a long sequence into shorter components. We hypothesized that the pre-SMA might have a special role in initiating each chunk but not at other points during the sequence. Experiment 2 therefore examined the effect of 0.5-s, 10-Hz repetitive transcranial magnetic stimulation (rTMS) directed over the pre-SMA. As hypothesized, performance was disrupted when rTMS was delivered over the pre-SMA at the beginning of the second chunk but not when it was delivered in the middle of a chunk. Contrary to the hypothesis, TMS did not disrupt sequence initiation. Experiments 3 and 4 examined whether the very first movement of a sequence could be disrupted under any circumstances. Pre-SMA TMS did disrupt the initiation of sequences but only when subjects had to switch between sequences and when the first movement of each sequence was not covertly instructed by a learned visuomotor association. In conjunction, the results suggest that for overlearned sequences the pre-SMA is primarily concerned with the initiation of a sequence or sequence chunk and the role of the pre-SMA in sequence initiation is only discerned when subjects must retrieve the sequence from memory as a superordinate set of movements without the aid of a visuomotor association. Control experiments revealed such effects were not present when rTMS was applied over the left dorsal premotor cortex.

Sign in / Sign up

Export Citation Format

Share Document