Cross-modal restoration of ocular dominance plasticity in adult mice

The European Journal of Neuroscience
Manuel TeichertJürgen Bolz

Abstract

The temporal closure of one eye in juvenile and young adult mice induces a shift of the ocular dominance (OD) of neurons in the binocular visual cortex. However, OD plasticity typically declines with age and is completely absent in matured mice beyond postnatal day (PD) 110. As it has been shown that the deprivation of one sensory input can induce neuronal alterations in non-deprived sensory cortices, we here investigated whether cross-modal interactions have the potential to reinstall OD plasticity in matured mice. Strikingly, using intrinsic signal imaging we could demonstrate that both whisker deprivation and auditory deprivation for only one week reinstated OD plasticity in fully adult mice. These OD shifts were always mediated by an increase of V1 responsiveness to visual stimulation of the open eye, a characteristic feature of OD plasticity normally only found in young adult mice. Moreover, systemic administration of the competitive NMDA receptor antagonist CPP completely abolished cross-modally induced OD plasticity. Taken together, we demonstrate here for the first time that the deprivation of non-visual senses has the potential to rejuvenate the adult visual cortex.

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Citations

Sep 27, 2019·Brain Structure & Function·Jenny BalogKonrad Lehmann
Jan 17, 2019·Neural Plasticity·Manuel Teichert, Jürgen Bolz
Aug 2, 2020·The Journal of Comparative Neurology·Takuji Kasamatsu, Kazuyuki Imamura

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