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. Author manuscript; available in PMC: 2013 Jul 18.
Published in final edited form as: Neuroimage. 2008 Feb 7;40(4):1772–1781. doi: 10.1016/j.neuroimage.2008.01.039

Table 5.

Interhemispheric inhibition targeting the right M1 assessed with paired-pulse TMS

10 ms 40 ms
restIHI 0.61 (0.32–0.90) 0.60 (0.28–1.11)
activeIHI 0.54 (0.09–0.89) 0.57 (0.20–1)
IHIc (activeIHI/restIHI) 0.86 (0.42–1.23) 0.95 (0.5–1.49)a

IHI = interhemispheric inhibition; restIHI=IHI measured with both hands relaxed; activeIHI=IHI measured during a tonic contraction of the dominant hand at 15–20% MVC. IHIc values < 1 indicate stronger IHI in the active condition.

a

Correlates positively with age (r2 = 0.24, P=0.018) and age2 (r2 = 0.24, P=0.018).