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Electrical synapses and the development of inhibitory circuits in the thalamus.

The Journal of physiology | 2016

The thalamus is a structure critical for information processing and transfer to the cortex. Thalamic reticular neurons are inhibitory cells interconnected by electrical synapses, most of which require the gap junction protein connexin36 (Cx36). We investigated whether electrical synapses play a role in the maturation of thalamic networks by studying neurons in mice with and without Cx36. When Cx36 was deleted, inhibitory synapses were more numerous, although both divergent inhibitory connectivity and dendritic complexity were reduced. Surprisingly, we observed non-Cx36-dependent electrical synapses with unusual biophysical properties interconnecting some reticular neurons in mice lacking Cx36. The results of the present study suggest an important role for Cx36-dependent electrical synapses in the development of thalamic circuits.

Pubmed ID: 26864476 RIS Download

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Associated grants

  • Agency: NINDS NIH HHS, United States
    Id: R01 NS050434
  • Agency: NINDS NIH HHS, United States
    Id: F31 NS060448

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