Laterality of interhemispheric inhibition depends on handedness.
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Laterality of interhemispheric inhibition depends on handedness. / Bäumer, Tobias; Dammann, E; Bock, F; Klöppel, S; Siebner, H R; Münchau, Alexander.
in: EXP BRAIN RES, Jahrgang 180, Nr. 2, 2, 2007, S. 195-203.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Laterality of interhemispheric inhibition depends on handedness.
AU - Bäumer, Tobias
AU - Dammann, E
AU - Bock, F
AU - Klöppel, S
AU - Siebner, H R
AU - Münchau, Alexander
PY - 2007
Y1 - 2007
N2 - There is some evidence that handedness is related to lateralisation of excitability in the motor system. We investigated lateralisation of interhemispheric inhibition (IHI), motor thresholds and short interval intracortical inhibition (SICI) and facilitation (SICF) in relation to handedness in 12 right (RH) and 13 left handed (LH) subjects. Because there is some controversy as to the optimal localisation to produce IHI we also compared IHI induced by conditioning the dorsal premotor cortex (dPM) versus primary motor cortex (M1) in ten RH. IHI was stronger following conditioning the motor dominant as compared to the motor non-dominant hemisphere in RH and LH. Motor thresholds were higher when elicited over the right hemisphere than over the left in both RH and LH, while SICI and SICF showed no differences between hemispheres or dependency from handedness. We hypothesize that IHI is a function of handedness perhaps reflecting predominant usage of the dominant hand, while lateralisation of thresholds and intracortical excitability are determined by other factors.
AB - There is some evidence that handedness is related to lateralisation of excitability in the motor system. We investigated lateralisation of interhemispheric inhibition (IHI), motor thresholds and short interval intracortical inhibition (SICI) and facilitation (SICF) in relation to handedness in 12 right (RH) and 13 left handed (LH) subjects. Because there is some controversy as to the optimal localisation to produce IHI we also compared IHI induced by conditioning the dorsal premotor cortex (dPM) versus primary motor cortex (M1) in ten RH. IHI was stronger following conditioning the motor dominant as compared to the motor non-dominant hemisphere in RH and LH. Motor thresholds were higher when elicited over the right hemisphere than over the left in both RH and LH, while SICI and SICF showed no differences between hemispheres or dependency from handedness. We hypothesize that IHI is a function of handedness perhaps reflecting predominant usage of the dominant hand, while lateralisation of thresholds and intracortical excitability are determined by other factors.
M3 - SCORING: Zeitschriftenaufsatz
VL - 180
SP - 195
EP - 203
JO - EXP BRAIN RES
JF - EXP BRAIN RES
SN - 0014-4819
IS - 2
M1 - 2
ER -
