University of Geneva, Switzerland.
University of Geneva, Switzerland.
Int J Psychophysiol. 2017 Sep;119:119-126. doi: 10.1016/j.ijpsycho.2017.01.010. Epub 2017 Jan 24.
The present study extends past research about reduced reward responsiveness in depression by assessing effort-related cardiovascular responses during anticipation of a social reward. Dysphoric (i.e., subclinically depressed) and nondysphoric participants worked on a cognitive task. Half the participants in each group expected the possibility to subscribe to a social exchange internet site. Effort mobilization during task performance was assessed by participants' cardiovascular reactivity. Confirming the predictions, nondysphoric participants in the social-reward condition had higher reactivity of pre-ejection period, systolic blood pressure, and heart rate, compared to the other three cells. In contrast, dysphoric participants' cardiovascular reactivity was generally low. These findings indicate that social-reward function is indeed impaired in subclinical depression. Implications for social punishment are discussed.
本研究通过评估对社会奖励的预期过程中心血管的努力相关反应，拓展了过去关于抑郁患者奖赏反应能力下降的研究。将抑郁（即亚临床抑郁）和非抑郁参与者分配到认知任务中。每组中有一半的参与者期望有机会订阅社交网站。通过参与者的心血管反应性来评估任务表现期间的努力调动情况。研究结果证实了预测，与其他三个条件相比，社交奖励条件下非抑郁参与者的射前期、收缩压和心率反应更高。相比之下，抑郁参与者的心血管反应通常较低。这些发现表明，亚临床抑郁确实损害了社会奖励功能。讨论了社会惩罚的影响。
