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Table 1. 

Overview of the Data (Mean ± SD) for the Right-handed and Left-handed Participants


Right Handed
Left Handed Left (Nondominant) Hemisphere Group
Left Handed Right (Dominant) Hemisphere Group
Left Handed (Pooled across Subgroups)
Age (years) 22 ± 3 24 ± 3 23 ± 2 23.4 ± 2.4 
Sex (male/female) 6/6 3/3 3/3 6/6 
Oldfield 92 ± 10** −86 ± 13 −97 ± 7 −91.5 ± 11.5 
STF (Hz) 
 LQ 0.035 ± 0.023** −0.04 ± 0.02 −0.05 ± 0.05 −0.04 ± 0.04 
 Tapping R 1.2 ± 0.3 1.2 ± 0.35 1.3 ± 0.35 1.35 ± 0.35 
 Tapping L 1.1 ± 0.3 1.5 ± 0.35 1.45 ± 0.41 1.45 ± 0.35 
RMT (% maximum stimulator output) 
 L hemisphere 46.8 ± 9.8 52.2 ± 9 44.2 ± 5 48.2 ± 8.1 
 R hemisphere 47.7 ± 9 49.5 ± 8.5 44.7 ± 6.8 47.1 ± 7.7 
Disruption TMS (%) 
 LQ −0.4 ± 0.3 −0.4 ± 0.3 0.3 ± 0.2** 0.05 ± 0.4 
 Tapping R 8.6 ± 3.8 10.9 ± 7 25.5 ± 8.9 18.2 ± 19.1 
 Tapping L 20.6 ± 9.8 21.8 ± 9.6 12.5 ± 2.8 17.7 ± 17.5 
Disruption medial nerve (%) 
 LQ −0.11 ± 0.33 −0.24 ± 0.47 0.2 ± 0.29* −0.02 ± 0.4 
 tapping R 18.2 ± 11.1 19.8 ± 15.5 26 ± 10 22.9 ± 12.9 
 tapping L 20.3 ± 9.3 28.1 ± 18 16.7 ± 7 22.4 ± 14.2 
Familial sinistrality – 33% 66% 50% 

Right Handed
Left Handed Left (Nondominant) Hemisphere Group
Left Handed Right (Dominant) Hemisphere Group
Left Handed (Pooled across Subgroups)
Age (years) 22 ± 3 24 ± 3 23 ± 2 23.4 ± 2.4 
Sex (male/female) 6/6 3/3 3/3 6/6 
Oldfield 92 ± 10** −86 ± 13 −97 ± 7 −91.5 ± 11.5 
STF (Hz) 
 LQ 0.035 ± 0.023** −0.04 ± 0.02 −0.05 ± 0.05 −0.04 ± 0.04 
 Tapping R 1.2 ± 0.3 1.2 ± 0.35 1.3 ± 0.35 1.35 ± 0.35 
 Tapping L 1.1 ± 0.3 1.5 ± 0.35 1.45 ± 0.41 1.45 ± 0.35 
RMT (% maximum stimulator output) 
 L hemisphere 46.8 ± 9.8 52.2 ± 9 44.2 ± 5 48.2 ± 8.1 
 R hemisphere 47.7 ± 9 49.5 ± 8.5 44.7 ± 6.8 47.1 ± 7.7 
Disruption TMS (%) 
 LQ −0.4 ± 0.3 −0.4 ± 0.3 0.3 ± 0.2** 0.05 ± 0.4 
 Tapping R 8.6 ± 3.8 10.9 ± 7 25.5 ± 8.9 18.2 ± 19.1 
 Tapping L 20.6 ± 9.8 21.8 ± 9.6 12.5 ± 2.8 17.7 ± 17.5 
Disruption medial nerve (%) 
 LQ −0.11 ± 0.33 −0.24 ± 0.47 0.2 ± 0.29* −0.02 ± 0.4 
 tapping R 18.2 ± 11.1 19.8 ± 15.5 26 ± 10 22.9 ± 12.9 
 tapping L 20.3 ± 9.3 28.1 ± 18 16.7 ± 7 22.4 ± 14.2 
Familial sinistrality – 33% 66% 50% 

Parameters that were significantly different in one group when compared with the others are indicated by **p < .05 or *p ≤ .08, t ≥ 1.94.

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