Harnessing a noncanonical vestibular input in the head-direction network to rectify age-related navigational deficits.

Xiao-Qian Hu, Kenneth Lap-Kei Wu, Kang-Lin Rong, Ke Ya, Wing-Ho Yung, Daisy Kwok-Yan Shum, Ying-Shing Chan

Department of Rehabilitation Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China. · pubmed

Paper

Abstract

Navigational decline is a metric distinct from aging-related cognitive degradation, yet the affected circuits and synaptic changes remain elusive. This study identified a long-range excitatory projection from parvalbumin (PV) neurons in the brainstem medial vestibular nucleus (MVN) of mice that monosynaptically innervates the midbrain dorsal tegmental nucleus (DTN). This PV

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Research summary

The study identifies a long-range excitatory projection from PV neurons in the MVN that affects navigational abilities in aging mice. This research is relevant as it explores underlying neural mechanisms that could contribute to age-related cognitive decline, specifically in navigation, which is a critical aspect of maintaining independence in aging populations.

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