After-effects of transcranial direct current stimulation (tDCS) on cortical spreading depression

2006 ◽  
Vol 398 (1-2) ◽  
pp. 85-90 ◽  
Author(s):  
David Liebetanz ◽  
Felipe Fregni ◽  
Katia K. Monte-Silva ◽  
Manuella B. Oliveira ◽  
Ângela Amâncio-dos-Santos ◽  
...  
Keyword(s):  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Cortical Spreading Depression ◽  
Spreading Depression ◽  
After Effects ◽  
Direct Current Stimulation

After-effects of consecutive sessions of transcranial direct current stimulation (tDCS) in a rat model of chronic inflammation

2012 ◽  
Vol 221 (1) ◽  
pp. 75-83 ◽  
Author(s):  
Gabriela Laste ◽  
Wolnei Caumo ◽  
Lauren Naomi Spezia Adachi ◽  
Joanna Ripoll Rozisky ◽  
Isabel Cristina de Macedo ◽  
...  
Keyword(s):  
Chronic Inflammation ◽  
Direct Current ◽  
Rat Model ◽  
Transcranial Direct Current Stimulation ◽  
After Effects ◽  
Direct Current Stimulation

Cerebellar Transcranial Direct Current Stimulation Impairs the Practice-dependent Proficiency Increase in Working Memory

2008 ◽  
Vol 20 (9) ◽  
pp. 1687-1697 ◽  
Author(s):  
R. Ferrucci ◽  
S. Marceglia ◽  
M. Vergari ◽  
F. Cogiamanian ◽  
S. Mrakic-Sposta ◽  
...  
Keyword(s):  
Working Memory ◽  
Prefrontal Cortex ◽  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Reaction Times ◽  
After Effects ◽  
Direct Current Stimulation ◽  
Cathodal Tdcs ◽  
Cerebellar Tdcs ◽  
Sternberg Task

How the cerebellum is involved in the practice and proficiency of non-motor functions is still unclear. We tested whether transcranial direct current stimulation (tDCS) over the cerebellum (cerebellar tDCS) induces after-effects on the practice-dependent increase in the proficiency of a working memory (WM) task (Sternberg test) in 13 healthy subjects. We also assessed the effects of cerebellar tDCS on visual evoked potentials (VEPs) in four subjects and compared the effects of cerebellar tDCS on the Sternberg test with those elicited by tDCS delivered over the prefrontal cortex in five subjects. Our experiments showed that anodal or cathodal tDCS over the cerebellum impaired the practice-dependent improvement in the reaction times in a WM task. Because tDCS delivered over the prefrontal cortex induced an immediate change in the WM task but left the practice-dependent proficiency unchanged, the effects of cerebellar tDCS are structure-specific. Cerebellar tDCS left VEPs unaffected, its effect on the Sternberg task therefore seems unlikely to arise from visual system involvement. In conclusion, tDCS over the cerebellum specifically impairs the practice-dependent proficiency increase in verbal WM.

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