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              <p>A large body of data indicate that the aminergic, cholinergic and hypocretin/orexin neurons are responsible for inducing wakefulness. However, recent data showed that other systems might also play a key role. Further, wakefulness induced by different drugs versus non-pharmacological means could be generated by different populations of neurons. To address these questions, we evaluated at the whole brain level in the same mice using TRAP2 model whether the same neurons were activated by the wake-inducing drugs modafinil and solriamfetol versus non-pharmacological wake. Our results show that nine subcortical structures namely the oval part of the bed nucleus of the stria terminalis, lateral part of the central amygdalar nucleus, paraventricular hypothalamic and thalamic and supraoptic nuclei, external part of the lateral parabrachial nucleus, caudal part of the nucleus of the solitary tract and the area postrema are significantly more activated by solriamfetol than modafinil and non-pharmacological wakefulness. In contrast, a second category of structures including the orexin neurons, the parasubthalamic and laterodorsal tegmental nucleus are strongly activated in all types of induced wake. Further, some classical wake systems like the dopaminergic neurons of the ventral tegmental area or the dorsal raphe nucleus and the noradrenergic neurons of the locus coeruleus are either very poorly or not strongly activated. These results reveal that many structures not previously involved in wakefulness might play a key role in regulating the state and that some structures might be more recruited by solriamfetol than modafinil or non-pharmacological wakefulness. Our results are particularly relevant for pathologies such as hypersomnia. They open a new era in the study of the mechanisms responsible for inducing wakefulness.</p>
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            <ref type="url">https://www.cnrs.fr/</ref>
          </desc>
        </org>
      </listOrg>
    </back>
  </text>
</TEI>