Cerebellar theta burst stimulation dissociates memory components in eyeblink classical conditioning

2014 ◽  
Vol 40 (9) ◽  
pp. 3363-3370 ◽  
Author(s):  
J. Monaco ◽  
C. Casellato ◽  
G. Koch ◽  
E. D'Angelo

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Jessica Monaco ◽  
Lorenzo Rocchi ◽  
Francesca Ginatempo ◽  
Egidio D'Angelo ◽  
John C. Rothwell

Associative learning of sensorimotor contingences, as it occurs in eyeblink classical conditioning (EBCC), is known to involve the cerebellum, but its mechanism remains controversial. EBCC involves a sequence of learning processes which are thought to occur in the cerebellar cortex and deep cerebellar nuclei. Recently, the extinction phase of EBCC has been shown to be modulated after one week by cerebellar continuous theta-burst stimulation (cTBS). Here, we asked whether cerebellar cTBS could affect retention and reacquisition of conditioned responses (CRs) tested immediately after conditioning. We also investigated a possible lateralized cerebellar control of EBCC by applying cTBS on both the right and left cerebellar hemispheres. Both right and left cerebellar cTBSs induced a statistically significant impairment in retention and new acquisition of conditioned responses (CRs), the disruption effect being marginally more effective when the left cerebellar hemisphere was stimulated. These data support a model in which cTBS impairs retention and reacquisition of CR in the cerebellum, possibly by interfering with the transfer of memory to the deep cerebellar nuclei.



2012 ◽  
Vol 590 (4) ◽  
pp. 887-897 ◽  
Author(s):  
Britt S. Hoffland ◽  
Matteo Bologna ◽  
Panagiotis Kassavetis ◽  
James T. H. Teo ◽  
John C. Rothwell ◽  
...  


2009 ◽  
Vol 40 (01) ◽  
Author(s):  
AS Sarfeld ◽  
M Ameli ◽  
JT Teo ◽  
S Diekhoff ◽  
G Fink ◽  
...  


2014 ◽  
Vol 7 (2) ◽  
pp. 269-274 ◽  
Author(s):  
Mark F. Jacobs ◽  
Philemon Tsang ◽  
Kevin G.H. Lee ◽  
Michael J. Asmussen ◽  
Christopher M. Zapallow ◽  
...  


2014 ◽  
Vol 7 (2) ◽  
pp. 340-341 ◽  
Author(s):  
Christian Plewnia ◽  
Bastian Zwissler ◽  
Barbara Wasserka ◽  
Andreas J. Fallgatter ◽  
Stefan Klingberg


2021 ◽  
Author(s):  
Angela Sanna ◽  
Paolo Follesa ◽  
Paolo Tacconi ◽  
Mariangela Serra ◽  
Maria Giuseppina Pisu ◽  
...  

AbstractSpinocerebellar ataxia 38 (SCA 38) is an autosomal dominant disorder caused by conventional mutations in the ELOVL5 gene which encodes an enzyme involved in the synthesis of very long fatty acids, with a specific expression in cerebellar Purkinje cells. Three Italian families carrying the mutation, one of which is of Sardinian descent, have been identified and characterized. One session of cerebellar intermittent theta burst stimulation (iTBS) was applied to 6 affected members of the Sardinian family to probe motor cortex excitability measured by motor-evoked potentials (MEPs). Afterwards, patients were exposed to ten sessions of cerebellar real and sham iTBS in a cross-over study and clinical symptoms were evaluated before and after treatment by Modified International Cooperative Ataxia Rating Scale (MICARS). Moreover, serum BDNF levels were evaluated before and after real and sham cerebellar iTBS and the role of BDNF Val66Met polymorphism in influencing iTBS effect was explored. Present data show that one session of cerebellar iTBS was able to increase MEPs in all tested patients, suggesting an enhancement of the cerebello-thalamo-cortical pathway in SCA 38. MICARS scores were reduced after ten sessions of real cerebellar iTBS showing an improvement in clinical symptoms. Finally, although serum BDNF levels were not affected by cerebellar iTBS when considering all samples, segregating for genotype a difference was found between Val66Val and Val66Met carriers. These preliminary data suggest a potential therapeutic use of cerebellar iTBS in improving motor symptoms of SCA38.



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