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Brain activity timescales shift with task demands and development

A bioRxiv preprint analysing fMRI data from 1,712 people reports that task-related changes in brain activity timescales vary across cortical regions, track cognitive performance and follow a two-stage pattern during youth. The findings link these changes to cortical features associated with neural plasticity, but do not establish a causal mechanism.

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Preprint reports long-range inputs to hippocampal Cajal-Retzius cells

A bioRxiv preprint reports that hippocampal Cajal-Retzius cells receive traced input from at least seven areas outside the hippocampus. The authors also describe strychnine-sensitive activity and close positioning of entorhinal fibres to glycinergic receptors.