Normative tDCS over V5 and FEF reveals practice-induced modulation of extraretinal smooth pursuit mechanisms, but no specific stimulation effect
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Normative tDCS over V5 and FEF reveals practice-induced modulation of extraretinal smooth pursuit mechanisms, but no specific stimulation effect. / Radecke, Jan-Ole; Sprenger, Andreas; Stöckler, Hannah; Espeter, Lisa; Reichhardt, Mandy-Josephine; Thomann, Lara S; Erdbrügger, Tim; Buschermöhle, Yvonne; Borgwardt, Stefan; Schneider, Till R; Gross, Joachim; Wolters, Carsten H; Lencer, Rebekka.
in: SCI REP-UK, Jahrgang 13, Nr. 1, 04.12.2023, S. 21380.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Normative tDCS over V5 and FEF reveals practice-induced modulation of extraretinal smooth pursuit mechanisms, but no specific stimulation effect
AU - Radecke, Jan-Ole
AU - Sprenger, Andreas
AU - Stöckler, Hannah
AU - Espeter, Lisa
AU - Reichhardt, Mandy-Josephine
AU - Thomann, Lara S
AU - Erdbrügger, Tim
AU - Buschermöhle, Yvonne
AU - Borgwardt, Stefan
AU - Schneider, Till R
AU - Gross, Joachim
AU - Wolters, Carsten H
AU - Lencer, Rebekka
N1 - © 2023. The Author(s).
PY - 2023/12/4
Y1 - 2023/12/4
N2 - The neural networks subserving smooth pursuit eye movements (SPEM) provide an ideal model for investigating the interaction of sensory processing and motor control during ongoing movements. To better understand core plasticity aspects of sensorimotor processing for SPEM, normative sham, anodal or cathodal transcranial direct current stimulation (tDCS) was applied over visual area V5 and frontal eye fields (FEF) in sixty healthy participants. The identical within-subject paradigm was used to assess SPEM modulations by practice. While no specific tDCS effects were revealed, within- and between-session practice effects indicate plasticity of top-down extraretinal mechanisms that mainly affect SPEM in the absence of visual input and during SPEM initiation. To explore the potential of tDCS effects, individual electric field simulations were computed based on calibrated finite element head models and individual functional localization of V5 and FEF location (using functional MRI) and orientation (using combined EEG/MEG) was conducted. Simulations revealed only limited electric field target intensities induced by the applied normative tDCS montages but indicate the potential efficacy of personalized tDCS for the modulation of SPEM. In sum, results indicate the potential susceptibility of extraretinal SPEM control to targeted external neuromodulation (e.g., personalized tDCS) and intrinsic learning protocols.
AB - The neural networks subserving smooth pursuit eye movements (SPEM) provide an ideal model for investigating the interaction of sensory processing and motor control during ongoing movements. To better understand core plasticity aspects of sensorimotor processing for SPEM, normative sham, anodal or cathodal transcranial direct current stimulation (tDCS) was applied over visual area V5 and frontal eye fields (FEF) in sixty healthy participants. The identical within-subject paradigm was used to assess SPEM modulations by practice. While no specific tDCS effects were revealed, within- and between-session practice effects indicate plasticity of top-down extraretinal mechanisms that mainly affect SPEM in the absence of visual input and during SPEM initiation. To explore the potential of tDCS effects, individual electric field simulations were computed based on calibrated finite element head models and individual functional localization of V5 and FEF location (using functional MRI) and orientation (using combined EEG/MEG) was conducted. Simulations revealed only limited electric field target intensities induced by the applied normative tDCS montages but indicate the potential efficacy of personalized tDCS for the modulation of SPEM. In sum, results indicate the potential susceptibility of extraretinal SPEM control to targeted external neuromodulation (e.g., personalized tDCS) and intrinsic learning protocols.
KW - Humans
KW - Transcranial Direct Current Stimulation/methods
KW - Pursuit, Smooth
KW - Frontal Lobe
KW - Magnetic Resonance Imaging/methods
U2 - 10.1038/s41598-023-48313-z
DO - 10.1038/s41598-023-48313-z
M3 - SCORING: Journal article
C2 - 38049419
VL - 13
SP - 21380
JO - SCI REP-UK
JF - SCI REP-UK
SN - 2045-2322
IS - 1
ER -