Section on Comparative Medicine , Wake Forest University School of Medicine, Winston-Salem, NC, USA.
Laterality. 2013;18(1):120-33. doi: 10.1080/1357650X.2011.642876. Epub 2012 Feb 21.
Studies of handedness suggest a relationship between hemispheric specialisation and emotional processing. Recently measures of lateralised tympanic membrane temperature (TMT) have identified similar relationships (i.e., the left hemisphere is involved in approach behaviour and the right hemisphere avoidance behaviour). In the present study we examined lateralised changes in TMT in response to social interaction in 10 Garnett's bushbabies. Additionally, we examined whether handedness could be used as a predictor of approach-avoidance tendencies. We found a positive association between temperature change and both allogrooming and affiliative approach. Social behaviour did not differ between right- and left-handed bushbabies. These findings are discussed in terms of existing theories of asymmetric emotional processing. Overall, the data suggest that there is a left hemisphere specialisation for processing approach-related behaviours, which is consistent with existing models of lateralised emotional processing. Our data also indicate that TMT is a reliable, cost-effective measure of cerebral activation that is less invasive and more practical than alternative measures such as EEG, PET, and fMRI.
用手习惯的研究表明大脑两半球专门化和情绪处理之间存在关系。最近，对偏向性鼓膜温度（TMT）的测量也发现了类似的关系（即左半球参与趋近行为，右半球参与回避行为）。在本研究中，我们研究了 10 只加内特长尾猴在社会互动中对 TMT 的偏向性变化。此外，我们还检验了用用手习惯是否可以作为趋近回避倾向的预测指标。我们发现温度变化与理毛和亲昵趋近呈正相关。右利手和左利手长尾猴的社会行为没有差异。我们根据现有的不对称情绪处理理论对这些发现进行了讨论。总的来说，数据表明，左半球专门处理与趋近相关的行为，这与现有的偏侧化情绪处理模型一致。我们的数据还表明，TMT 是一种可靠、经济有效的大脑激活测量方法，比 EEG、PET 和 fMRI 等替代测量方法更具侵入性和实用性。
