Kotikalapudi Raviteja, Dricu Mihai, Moser Dominik Andreas, Aue Tatjana
Institute for Psychology, University of Bern, Fabrikstrasse 8, 3012 Bern, Switzerland.
Brain Sci. 2022 Feb 26;12(3):315. doi: 10.3390/brainsci12030315.
Individuals often anticipate an unrealistically favorable future for themselves (personal optimism bias) or others (social optimism bias). While such biases are well established, little is known about their neuroanatomy. In this study, participants engaged in a soccer task and estimated the likelihood of successful passes in personal and social scenarios. Voxel-based morphometry revealed that personal optimism bias varied as a positive function of gray matter volume (GMV) in the putamen, frontal pole, hippocampus, temporal pole, inferior temporal gyrus, visual association areas, and mid-superior temporal gyrus. Social optimism bias correlated positively with GMV in the temporoparietal junction and negatively with GMV in the inferior temporal gyrus and pre-supplementary motor areas. Together, these findings suggest that parts of our optimistic outlook are biologically rooted. Moreover, while the two biases looked similar at the behavioral level, they were related to distinct gray matter structures, proposing that their underlying mechanisms are not identical.
个体常常对自己（个人乐观偏差）或他人（社会乐观偏差）的未来抱有不切实际的乐观预期。虽然这种偏差已被充分证实，但对其神经解剖学却知之甚少。在本研究中，参与者进行了一项足球任务，并估计了在个人和社会场景中成功传球的可能性。基于体素的形态测量显示，个人乐观偏差随壳核、额极、海马体、颞极、颞下回、视觉联合区和颞中-上回灰质体积（GMV）的增加而呈正相关变化。社会乐观偏差与颞顶联合区的GMV呈正相关，与颞下回和辅助运动前区的GMV呈负相关。这些发现共同表明，我们乐观态度的某些部分具有生物学根源。此外，虽然这两种偏差在行为层面看起来相似，但它们与不同的灰质结构相关，这表明它们的潜在机制并不相同。
