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Neural activity in the mouse claustrum in a cross-modal sensory selection task 12/03/2021
Chevée, Finkel et al. show that the activity of neurons in the anterior claustrum recorded during a cross-modal sensory selection task reflects movement rather than sensory input. Premotor activity in individual claustrum neurons was biased for ipsilateral or contralateral movements and encoded upcoming lick direction during intertrial intervals.
A large majority of awake hippocampal sharp-wave ripples feature spatial trajectories with momentum 12/03/2021
Krause and Drugowitsch use a probabilistic approach to characterize the spatial dynamics encoded by hippocampal place cell activity of rodents during sharp-wave ripple events and show that these dynamics feature momentum, like the animal’s movement.
Meta-learning synaptic plasticity and memory addressing for continual familiarity detection 12/02/2021
Tyulmankov et al. use meta-learning to build neural network models for continual familiarity detection. They show that anti-Hebbian plasticity is the preferred mechanism for optimizing memory capacity and propose strong feedforward weights as an explicit addressing mechanism for selecting memory locations during storage and retrieval.
A glial ClC Cl− channel mediates nose touch responses in C. elegans 12/02/2021
Fernandez-Abascal et al. report that a ClC Cl− channel expressed in glia associated with mechanosensory neurons mediates touch responses. The glial Cl− channel mediates efflux of Cl− from glia, which consequently permeates through GABA receptors expressed on mechanosensory neurons, resulting in regulation of neuronal Ca2+ and cAMP levels, enabling touch responses.