Continuous theta-burst stimulation over the dorsal premotor cortex interferes with associative learning during object lifting

Cortex ◽  
2009 ◽  
Vol 45 (4) ◽  
pp. 473-482 ◽  
Author(s):  
Dennis A. Nowak ◽  
Julia Berner ◽  
Bärbel Herrnberger ◽  
Thomas Kammer ◽  
Georg Grön ◽  
...  
Keyword(s):  
Associative Learning ◽  
Premotor Cortex ◽  
Dorsal Premotor Cortex ◽  
Theta Burst Stimulation ◽  
Burst Stimulation ◽  
Object Lifting ◽  
Theta Burst ◽  
Continuous Theta Burst Stimulation

The effect of continuous theta burst stimulation over premotor cortex on circuits in primary motor cortex and spinal cord

2009 ◽  
Vol 120 (4) ◽  
pp. 796-801 ◽  
Author(s):  
Ying-Zu Huang ◽  
John C. Rothwell ◽  
Chin-Song Lu ◽  
JiunJie Wang ◽  
Yi-Hsin Weng ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Motor Cortex ◽  
Primary Motor Cortex ◽  
Premotor Cortex ◽  
Theta Burst Stimulation ◽  
Burst Stimulation ◽  
Theta Burst ◽  
Continuous Theta Burst Stimulation

scholarly journals Intermittent theta burst stimulation facilitates functional connectivity from the dorsal premotor cortex to primary motor cortex

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9253
Author(s):  
Hai-Jiang Meng ◽  
Na Cao ◽  
Jian Zhang ◽  
Yan-Ling Pi
Keyword(s):  
Motor Cortex ◽  
Primary Motor Cortex ◽  
Premotor Cortex ◽  
Intracortical Inhibition ◽  
Corticospinal Excitability ◽  
Dorsal Premotor Cortex ◽  
Theta Burst Stimulation ◽  
Burst Stimulation ◽  
Intracortical Facilitation ◽  
Theta Burst

Background Motor information in the brain is transmitted from the dorsal premotor cortex (PMd) to the primary motor cortex (M1), where it is further processed and relayed to the spinal cord to eventually generate muscle movement. However, how information from the PMd affects M1 processing and the final output is unclear. Here, we applied intermittent theta burst stimulation (iTBS) to the PMd to alter cortical excitability not only at the application site but also at the PMd projection site of M1. We aimed to determine how PMd iTBS–altered information changed M1 processing and the corticospinal output. Methods In total, 16 young, healthy participants underwent PMd iTBS with 600 pulses (iTBS600) or sham-iTBS600. Corticospinal excitability, short-interval intracortical inhibition (SICI), and intracortical facilitation (ICF) were measured using transcranial magnetic stimulation before and up to 60 min after stimulation. Results Corticospinal excitability in M1 was significantly greater 15 min after PMd iTBS600 than that after sham-iTBS600 (p = 0.012). Compared with that after sham-iTBS600, at 0 (p = 0.014) and 15 (p = 0.037) min after iTBS600, SICI in M1 was significantly decreased, whereas 15 min after iTBS600, ICF in M1 was significantly increased (p = 0.033). Conclusion Our results suggested that projections from the PMd to M1 facilitated M1 corticospinal output and that this facilitation may be attributable in part to decreased intracortical inhibition and increased intracortical facilitation in M1. Such a facilitatory network may inform future understanding of the allocation of resources to achieve optimal motion output.

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