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    Brain Stem Serotonin tagged posts

    Good and Bad Feelings for Brain Stem Serotonin

    December 30, 2022, Categories  Biology/Biotechnology, Health/Medical

    An illustration of a mouse head in profile, indicating areas where facial expression change is observed during the experiment. The majority of the head is blue, but the ears, nose and lower jaw are indigo through read, indicating that these areas are show the most changes. Illustration by Yu Ohmura.
    An illustration of the facial expression changes in mice following stimulation and inhibition of the median raphe nucleus (Yu Ohmura).

    New insights into the opposing actions of serotonin-producing nerve fibres in mice could lead to drugs for treating addictions and major depression.

    Scientists in Japan have identified a nerve pathway involved in the processing of rewarding and distressing stimuli and situations in mice.

    The new pathway, originating in a bundle of brain stem nerve fibres called the median raphe nucleus, acts in opposition to a previously identified reward/aversion pathway that originates in the nearby dorsal raphe nucleus...

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