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Abstract. Rationale: The pedunculopontine tegmental nucleus (PPTg) has been implicated in the self-administration of drugs, particularly nicotine, which acts directly through the PPTg in addition to targeting midbrain dopamine neurons. The direct action of nicotine in PPTg may be through GABAergic mechanisms that have been shown to influence nicotine self-administration preferentially compared to...
Abstract. Rationale: The pedunculopontine tegmental nucleus (PPTg) is part of the neuronal circuit activated by self-administered nicotine. The cholinergic neurons of the PPTg comprise a prominent projection to midbrain dopamine neurons. However, anatomical studies of Fos expression suggest that nicotine targets primarily non-cholinergic neurons in the PPTg, especially GABAergic and glutamatergic...
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