Person
Traian Popa
This person is no longer with EPFL
Related publications (10)
Non-invasive stimulation of the human striatum disrupts reinforcement learning of motor skills
Friedhelm Christoph Hummel, Takuya Morishita, Pierre Theopistos Vassiliadis, Elena Beanato, Esra Neufeld, Fabienne Windel, Maximilian Jonas Wessel, Traian Popa, Julie Duqué
Reinforcement feedback can improve motor learning, but the underlying brain mechanisms remain underexplored. In particular, the causal contribution of specific patterns of oscillatory activity within the human striatum is unknown. To address this question, ...
Nature Portfolio2024Noninvasive theta-burst stimulation of the human striatum enhances striatal activity and motor skill learning
Friedhelm Christoph Hummel, Takuya Morishita, Pablo Maceira Elvira, Pierre Theopistos Vassiliadis, Elena Beanato, Esra Neufeld, Fabienne Windel, Maximilian Jonas Wessel, Chang-Hyun Park, Traian Popa, Pauline Menoud
The stimulation of deep brain structures has thus far only been possible with invasive methods. Transcranial electrical temporal interference stimulation (tTIS) is a novel, noninvasive technology that might overcome this limitation. The initial proof-of-co ...
Berlin2023Transcranial magnetic stimulation of the brain: What is stimulated? - A consensus and critical position paper
Transcranial (electro)magnetic stimulation (TMS) is currently the method of choice to non-invasively induce neural activity in the human brain. A single transcranial stimulus induces a time-varying electric field in the brain that may evoke action potentia ...
ELSEVIER IRELAND LTD2022Depotentiation of associative plasticity is intact in Parkinson's disease with mild dyskinesia
Objective: Depotentiation of homosynaptic plasticity of the primary motor cortex (M1) is impaired in patients with Parkinson's disease (PD) who have developed dyskinesias. In this exploratory study, we tested whether this holds true for heterosynaptic plas ...
ELSEVIER SCI LTD2022Dissecting motor skill acquisition: Spatial coordinates take precedence
Friedhelm Christoph Hummel, Takuya Morishita, Pablo Maceira Elvira, Maximilian Jonas Wessel, Traian Popa, Anne-Christine Schmid
Practicing a previously unknown motor sequence often leads to the consolidation of motor chunks, which enable its accurate execution at increasing speeds. Recent imaging studies suggest the function of these structures to be more related to the encoding, s ...
AMER ASSOC ADVANCEMENT SCIENCE2022Inter-Individual Variability in Motor Output Is Driven by Recruitment Gain in the Corticospinal Tract Rather Than Motor Threshold
Variability in the response of individuals to various non-invasive brain stimulation protocols is a major problem that limits their potential for clinical applications. Baseline motor-evoked potential (MEP) amplitude is the key predictor of an individual's ...
MDPI2022The role of the inferior parietal lobule in writer's cramp
Humans have a distinguishing ability for fine motor control that is subserved by a highly evolved cortico-motor neuronal network. The acquisition of a particular motor skill involves a long series of practice movements, trial and error, adjustment and refi ...
OXFORD UNIV PRESS2020The effect of frontoparietal paired associative stimulation on decision-making and working memory
Previous single-site neurostimulation experiments have unsuccessfully attempted to shift decision-making away from habitual control, a fast, inflexible cognitive strategy, towards goal-directed control, a flexible, though computationally expensive strategy ...
ELSEVIER MASSON, CORPORATION OFFICE2019Consensus Paper: Experimental Neurostimulation of the Cerebellum
The cerebellum is best known for its role in controlling motor behaviors. However, recent work supports the view that it also influences non-motor behaviors. The contribution of the cerebellum towards different brain functions is underscored by its involve ...
Springer2019Wearable technology in stroke rehabilitation: towards improved diagnosis and treatment of upper-limb motor impairment
Friedhelm Christoph Hummel, Pablo Maceira Elvira, Traian Popa, Anne-Christine Schmid
Stroke is one of the main causes of long-term disability worldwide, placing a large burden on individuals and society. Rehabilitation after stroke consists of an iterative process involving assessments and specialized training, aspects often constrained by ...
2019