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Distinct neural correlates of social and object reward seeking motivation.
European Journal of Neroscience ( IF 3.4 ) Pub Date : 2020-07-02 , DOI: 10.1111/ejn.14888
Indu Dubey 1, 2, 3 , Alexandra L Georgescu 3, 4, 5 , Maximilian Hommelsen 5, 6 , Kai Vogeley 5, 7 , Danielle Ropar 2 , Antonia F de C Hamilton 3
Affiliation  

The “Choose‐a‐Movie‐CAM” is an established task to quantify the motivation for seeking social rewards. It allows participants to directly assess both the stimulus value and the effort required to obtain it. In the present study, we aimed to identify the neural mechanisms of such cost‐benefit decision‐making. To this end, functional Magnetic Resonance Imaging data were collected from 24 typical adults while they completed the CAM task. We partly replicated the results from our previous behavioural studies showing that typical adults prefer social over object stimuli and low effort over higher effort stimuli but found no interaction between the two. Results from neuroimaging data suggest that there are distinct neural correlates for social and object preferences. The precuneus and medial orbitofrontal cortex, two key areas involved in social processing are engaged when participants make a social choice. Areas of the ventral and dorsal stream pathways associated with object recognition are engaged when making an object choice. These activations can be seen during the decision phase even before the rewards have been consumed, indicating a transfer the hedonic properties of social stimuli to its cues. We also found that the left insula and bilateral clusters in the inferior occipital gyrus and the inferior parietal lobule were recruited for increasing effort investment. We discuss limitations and implications of this study which reveals the distinct neural correlates for social and object rewards, using a robust behavioural measure of social motivation.

中文翻译:

社会和客体寻求奖励动机的不同神经关联。

“选择电影-CAM”是一项既定任务,可以量化寻求社会奖励的动机。它使参与者可以直接评估刺激价值和获得刺激所需的努力。在本研究中,我们旨在确定这种成本效益决策的神经机制。为此,在完成CAM任务时从24位典型成年人那里收集了功能性磁共振成像数据。我们部分复制了以前的行为研究的结果,结果表明,典型的成年人更喜欢社交刺激而不是物体刺激,而低强度的努力比高强度的刺激更大,但发现两者之间没有相互作用。神经影像数据的结果表明,社交和对象偏好存在明显的神经相关。足前核和眶额内侧皮层 参与者做出社会选择时,涉及社会处理的两个关键领域。进行对象选择时,会接合与对象识别相关的腹侧和背侧流通路的区域。在决策阶段甚至在奖励被消耗之前就可以看到这些激活,表明社交刺激的享乐属性已转移到其提示。我们还发现,在枕下回和顶叶下小叶的左岛和双侧簇被招募以增加努力投资。我们讨论了这项研究的局限性和意义,它使用了一种强有力的社会动机行为测度,揭示了社会和对象奖励所具有的独特的神经相关性。进行对象选择时,会接合与对象识别相关的腹侧和背侧流通路的区域。在决策阶段甚至在奖励被消耗之前就可以看到这些激活,表明社交刺激的享乐属性已转移到其提示。我们还发现,在枕下回和顶叶下小叶的左岛和双侧簇被招募以增加努力投资。我们讨论了这项研究的局限性和意义,它使用了一种强有力的社会动机行为测度,揭示了社会和对象奖励所具有的独特的神经相关性。进行对象选择时,会接合与对象识别相关的腹侧和背侧流通路的区域。在决策阶段甚至在奖励被消耗之前就可以看到这些激活,表明社交刺激的享乐属性已转移到其提示。我们还发现,在枕下回和顶叶下小叶的左岛和双侧簇被招募以增加努力投资。我们讨论了这项研究的局限性和意义,它使用了一种强有力的社会动机行为测度,揭示了社会和对象奖励所具有的独特的神经相关性。表明社交刺激的享乐性向其暗示转移。我们还发现,在枕下回和顶叶下小叶的左岛和双侧簇被招募以增加努力投资。我们讨论了这项研究的局限性和意义,它使用了一种强有力的社会动机行为测度,揭示了社会和对象奖励所具有的独特的神经相关性。表明社交刺激的享乐性向其暗示转移。我们还发现,在枕下回和顶叶下小叶的左岛和双侧簇被招募以增加努力投资。我们讨论了这项研究的局限性和意义,它使用了一种强有力的社会动机行为测度,揭示了社会和对象奖励所具有的独特的神经相关性。
更新日期:2020-07-02
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