Tag: pobudliwość korowa

Pobudliwość drogi korowo-rdzeniowej podczas dziennej przerywanej głodówki w Ramadanie: badanie z zastosowaniem przezczaszkowej stymulacji magnetycznej

Maryam Husain, Nabeil Saad, Sara Taha, Taif Omran, Meeyoung Kim

Maryam Husain, Nabeil Saad, Sara Taha, Taif Omran, Meeyoung Kim – Corticospinal excitability during Ramadan diurnal intermittent fasting: a transcranial magnetic stimulation study –  Fizjoterapia Polska 2025; 25(5); 120-125

DOI: https://doi.org/10.56984/8ZGA431D8L7

Abstract
Aim. Ramadan fasting involves intermittent energy restriction, altered sleep patterns, and circadian disruption. However, direct assessment of corticospinal excitability remains limited. This study examined changes in motor-evoked potentials (MEPs) during Ramadan fasting using single-pulse transcranial magnetic stimulation (TMS), alongside cognitive and metabolic measures.
Materials and methods. Twenty-eight healthy adults (mean age 20.2 ± 1.7 years) observing Ramadan fasting completed assessments at two time points: pre-Ramadan (T1) and mid-Ramadan (T2). Corticospinal excitability was assessed using MEP amplitude and latency elicited by single-pulse TMS over the primary motor cortex. Concurrent measures included a visual working memory (VWM) test, the Stroop test, capillary glucose level, and self-reported sleep duration.
Results. Significant reductions were observed in glucose levels and sleep duration during fasting, whereas VWM performance improved; however, this improvement may reflect practice effects and the absence of a control group rather than fasting-related enhancement. No significant changes were detected in MEP amplitude, MEP latency, or Stroop test performance. Changes in MEP parameters were not significantly correlated with changes in metabolic or cognitive measures.
Conclusion. Under the single-pulse TMS protocol used, corticospinal excitability showed no detectable change during mid-Ramadan fasting. These preliminary findings should be interpreted cautiously given the limited sample size, absence of a control group, and the protocol’s constrained sensitivity.
Key words
transcranial magnetic stimulation, Ramadan, intermittent fasting, cognitive function, motor-evoked potentials, cortical excitability
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The use of transcranial direct current stimulation in clinical and healthy populations

Małgorzata Wójcik, Přemysl Vlček, Danuta Lietz-Kijak, Eugen Kvašňák, Marcela Grünerová-Lippertová

Małgorzata Wójcik, Přemysl Vlček, Danuta Lietz-Kijak, Eugen Kvašňák, Marcela Grünerová-Lippertová – The use of transcranial direct current stimulation in clinical and healthy populations –  Fizjoterapia Polska 2025; 25(4); 242-244

DOI: https://doi.org/10.56984/8ZGA4312XAN

 

Abstract
Transcranial direct current stimulation (tDCS) is a widely investigated non-invasive neuromodulation technique that has emerged as a promising approach for regulating cortical excitability and modulating brain function. It operates by delivering a constant, low-intensity electrical current through scalp-mounted electrodes, thereby altering neuronal membrane potentials and inducing lasting modifications in synaptic plasticity. The tDCS procedure is non-invasive and relatively easy to administer, which makes it applicable across a wide range of clinical conditions. This form of stimulation is frequently employed in neurological and psychiatric disorders, but it is also applied in healthy individuals. Its use in other clinical conditions also appears promising due to the potential to facilitate recovery.
Key words
transcranial direct current stimulation, neuromodulation, cortical excitability, brain function, clinical application, healthy individuals
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