Tonic activity in lateral habenula neurons acts as a neutral valence brake on reward-seeking behavior.

Tonic activity in lateral habenula neurons acts as a neutral valence brake on reward-seeking behavior.
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侧向Habenula神经元中的滋补活性是对寻求奖励行为的中性价制动器。

DOI:
10.1016/j.cub.2022.08.016
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发表时间:
2022-10-24
期刊:
影响因子:
9.2
通讯作者:
Warden, Melissa R.
Warden, Melissa R.
中科院分区:
生物学1区
文献类型:
--
作者:
Post, Ryan J.;Bulkin, David A.;Ebitz, R. Becket;Lee, Vladlena;Han, Kasey;Warden, Melissa R.

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生存既需要坚持不懈地追求目标的能力,也需要决定何时停止的能力,这是一种毅力和解脱的适应性平衡。外侧缰核(LHb)的神经活动与负效价有关,但它在调节参与的奖励寻求和脱离的行为状态之间的平衡方面的作用仍不清楚。在这里,我们表明,LHb神经活动是紧张性升高,在几分钟长的时间内脱离奖励寻求行为,无论是由于重复的奖励遗漏(负价),当足够的奖励已经消耗(正价)。此外,我们表明,LHb抑制延长正在进行的奖励寻求行为状态,但不提示任务重新参与。我们没有发现腹侧被盖区多巴胺神经元类似的紧张性活动变化的证据。我们的研究结果支持了一个框架,其中LHb神经元的紧张性活动抑制参与奖励寻求行为,以响应负和正效价的因素。Post,Bulkin等人表明,当小鼠从寻求奖励的任务中休息时,外侧缰(LHb)神经元的活动会紧张性升高。升高的LHb活动观察到在负(重复奖励遗漏)以及积极(饱腹感)因素驱动的任务脱离,和LHb抑制延长奖励寻求行为状态。
Survival requires both the ability to persistently pursue goals and the ability to determine when it is time to stop, an adaptive balance of perseverance and disengagement. Neural activity in the lateral habenula (LHb) has been linked to negative valence, but its role in regulating the balance between engaged reward-seeking and disengaged behavioral states remains unclear. Here, we show that LHb neural activity is tonically elevated during minutes-long periods of disengagement from reward-seeking behavior, both when due to repeated reward omission (negative valence) and when sufficient reward has been consumed (positive valence). Further, we show that LHb inhibition extends ongoing reward-seeking behavioral states but does not prompt task re-engagement. We find no evidence for similar tonic activity changes in ventral tegmental area dopamine neurons. Our findings support a framework in which tonic activity in LHb neurons suppresses engagement in reward-seeking behavior in response to both negatively- and positively-valenced factors. Post, Bulkin et al. show that activity in lateral habenula (LHb) neurons is tonically elevated when mice take breaks from reward-seeking tasks. Elevated LHb activity is observed during task disengagements driven by negative (repeated reward omission) as well as positive (satiety) factors, and LHb inhibition extends reward-seeking behavioral states.
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