The rostromedial tegmental nucleus (RMTg), a GABAergic afferent to midbrain dopamine neurons, encodes aversive stimuli and inhibits motor responses.
The rostromedial tegmental nucleus (RMTg), a GABAergic afferent to midbrain dopamine neurons, encodes aversive stimuli and inhibits motor responses.
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DOI:
10.1016/j.neuron.2009.02.001
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发表时间:
2009-03-12
期刊:
影响因子:
16.2
通讯作者:
Holland, Peter C.
中科院分区:
文献类型:
--
作者:
Jhou, Thomas C.;Fields, Howard L.;Baxter, Mark G.;Saper, Clifford B.;Holland, Peter C.
Separate studies have implicated the lateral habenula (LHb) or amygdala-related regions in processing aversive stimuli, but their relationships to each other and to appetitive motivational systems are poorly understood. We show that neurons in the recently identified GABAergic rostromedial tegmental nucleus (RMTg), which receive a major LHb input, project heavily to midbrain dopamine neurons, and show phasic activations and/or Fos induction after aversive stimuli (footshocks, shock-predictive cues, food deprivation, or reward omission) and inhibitions after rewards or reward-predictive stimuli. RMTg lesions markedly reduce passive fear behaviors (freezing, open-arm avoidance) dependent on the extended amygdala, periaqueductal gray, or septum, all regions that project directly to the RMTg. In contrast, RMTg lesions spare or enhance active fear responses (treading, escape) in these same paradigms. These findings suggest that aversive inputs from widespread brain regions and stimulus modalities converge onto the RMTg, which opposes reward and motor-activating functions of midbrain dopamine neurons
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影响因子:
5.3
作者:
Ford, CP;Mark, GP;Williams, JT
通讯作者:
Williams, JT
影响因子:
3.4
作者:
Feenstra, MGP;Vogel, M;de Bruin, JPC
通讯作者:
de Bruin, JPC
影响因子:
3.3
作者:
Ferreira, J. G. P.;Del-Fava, F.;Shammah-Lagnado, S. J.
通讯作者:
Shammah-Lagnado, S. J.
影响因子:
1.9
作者:
Ikemoto, S;Murphy, JM;McBride, WJ
通讯作者:
McBride, WJ
DOI:
10.1523/jneurosci.3463-08.2008
发表时间:
2008-11-12
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Hikosaka O;Sesack SR;Lecourtier L;Shepard PD
通讯作者:
Shepard PD