Technology, expertise and social cognition in human evolution
Article first published online: 6 MAR 2011
© 2011 The Authors. European Journal of Neuroscience © 2011 Federation of European Neuroscience Societies and Blackwell Publishing Ltd
European Journal of Neuroscience
Volume 33, Issue 7, pages 1328–1338, April 2011
How to Cite
Stout, D., Passingham, R., Frith, C., Apel, J. and Chaminade, T. (2011), Technology, expertise and social cognition in human evolution. European Journal of Neuroscience, 33: 1328–1338. doi: 10.1111/j.1460-9568.2011.07619.x
- Issue published online: 3 APR 2011
- Article first published online: 6 MAR 2011
- Received 22 April 2010, revised 15 December 2010, accepted 23 December 2010
Fig. S1. Handaxes produced (a–c) by Trained subjects, (d) by the expert demonstrator, and (e) from the Middle Pleistocene (ca. 500 000 years ago) site of Boxgrove, West Sussex, UK.
Fig. S2. Local brain activity in Oldowan–Control (left) and Acheulean–Control (right) irrespective of subject expertise (FDR P < 0.05, extent k > 20). To more directly compare current results with previous FDG-PET studies of Oldowan and Acheulean tool-making execution, we examined separate contrasts of Oldowan and Acheulean tool-making with the Control. This yielded activations of left ventral premotor cortex in both contrasts (Oldowan: −56, 8, 22; Acheulean: −58, 10, 32), and of right pars triangularis in the Acheulean (46, 36, 4) but not Oldowan contrast. This directly matches results from the execution of Oldowan (ventral premotor cortex: −52, 6, 28) and Acheulean (ventral premotor cortex: −52, 6, 28; pars triangularis: 48, 34, 10) tool-making (Stout et al., 2008; Table 2).
Fig. S3. Local brain activity in Oldowan–Control for Naïve (left), Trained (centre) and Expert (right) subjects (FDR P < 0.05, extent k > 20).
Fig. S4. Local brain activity in Acheulean–Control for Naïve (left), Trained (centre) and Experts (right) subjects (FDR P < 0.05, extent k > 20).
Table S1. Brain activity in response of the observation of Oldowan compared with Control stimuli, common to the three groups (minimum statistic conjunction) and by subject expertise (exclusive masking). All results are FDR P < 0.05, extent k > 20.
Table S2. Brain activity in response of the observation of Acheulean compared with Control stimuli, common to the three groups (minimum statistic conjunction) and by subject expertise (exclusive masking). All results are FDR P < 0.05, extent k > 20.
Video S1. Examples of Control, Oldowan and Acheulean stimuli used in the experiment.
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