Cal calcium imaging of HVC projection neurons during freely produced songs is used to suggest that stable motor sequences need not rely on rigid repeated activation of the same cellular ensemble but can preserve temporal order while flexibly selecting which neurons contribute to each expression of the behavior.
It is suggested that rhythmic activity in the striatum is more closely linked to motor preparation, whereas cerebellar activity provides a more movement-invariant representation that may contribute to the formation of an internal model of rhythmic stimulus sequence.
Masashi Kameda, Masaki Tanaka· Journal of Neuroscience· 0 citations
The HVC nucleus of the zebra finch song motor circuit demonstrates an ability to restore the original birdsong after lesioning, even though neurons participate stochastically in song generation, and the unreliable participation of neurons may provide a flexible manifold for both learning and recovery.
Christopher H. Leung, Carlos Lois, Reina E. Li et al.· 0 citations
This approach establishes a blueprint for non-invasively mapping cortico-cerebellar network dynamics, providing a framework to study circuit-level dysfunctions in disorders affecting the cerebellum and show that cortico-cerebellar coupling functions as a gating mechanism and suggest that cerebellar circuits modulate co...
Coen S. Zandvoort, Charlotte C. Wissing, Jonathan Winter et al.· bioRxiv· 0 citations
Together they suggest that thalamic dynamics contribute to motor learning through multiple mechanisms: beta-band power reflects the emergence of learned motor representations, whereas beta–high-frequency coupling is enhanced when the context is less predictable.
Angela Voegtle, L. Buentjen, Stefan Repplinger et al.· bioRxiv· 0 citations
Beta oscillations are a fundamental feature of brain activity, linked to long-range connectivity within canonical networks, inhibition of sensorimotor cortices and the maintenance of a stable sensorimotor state in situations where the external world is predictable. The importance of beta oscillations in brain function...
Joseph Gibson, Jessikah Fildes, Alan Kirby et al.· bioRxiv· 0 citations
The consolidation of novel motor skills has traditionally been investigated over the timescale of hours-days following practice. However, a growing body of evidence has demonstrated that consolidation of skills occurs more rapidly across a scale of seconds – a process termed ‘micro-consolidation’. Micro-consolidation o...
