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. Author manuscript; available in PMC: 2011 Apr 2.
Published in final edited form as: Behav Brain Res. 2009 Dec 24;208(2):436–443. doi: 10.1016/j.bbr.2009.12.012

Table 3.

Summary of PT Surface Area Asymmetries in Chimpanzees and Humans

%L %A %R N %Difference
Chimpanzees
   Gannon et al. [36] 94 0 6 18 24.8
   Gilissen [37] 70 10 20 10 8.0
   This study, 3.0T 77 6 17 48 5.7
   This study, 1.5T 68 12 21 34 5.5
   This study, Cadaver 65 17 17 21 2.7
   Average (all samples) 78 7 15 129 12.6
Humans
   Shapleske et al. [11] 78 8 14 667 13.2

%L = percent left-biased, %A = percent with no bias, %R = percent right-biased. N = sample size; % Difference = percentage difference in the PT area of the right and left hemispheres. Positive values indicate left hemisphere bias and negative values indicate right side bias.