1. Ongoing movement controls sensory integration in the dorsolateral striatum.
- Author
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de la Torre-Martinez, Roberto, Ketzef, Maya, and Silberberg, Gilad
- Abstract
The dorsolateral striatum (DLS) receives excitatory inputs from both sensory and motor cortical regions. In the neocortex, sensory responses are affected by motor activity, however, it is not known whether such sensorimotor interactions occur in the striatum and how they are shaped by dopamine. To determine the impact of motor activity on striatal sensory processing, we performed in vivo whole-cell recordings in the DLS of awake mice during the presentation of tactile stimuli. Striatal medium spiny neurons (MSNs) were activated by both whisker stimulation and spontaneous whisking, however, their responses to whisker deflection during ongoing whisking were attenuated. Dopamine depletion reduced the representation of whisking in direct-pathway MSNs, but not in those of the indirect-pathway. Furthermore, dopamine depletion impaired the discrimination between ipsilateral and contralateral sensory stimulation in both direct and indirect pathway MSNs. Our results show that whisking affects sensory responses in DLS and that striatal representation of both processes is dopamine- and cell type-dependent.The basal ganglia process sensory and motor related information, but it is not known how movement affects sensory integration. Here, the authors show using in vivo whole-cell recordings that striatal neurons respond to both sensory stimuli and spontaneous whisking and that sensory responses are attenuated by whisking. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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