Parvalbumin-positive interneurons

Chronic downregulation of parvalbumin-positive cell activity accelerates early perceptual learning but impairs end performance

These findings suggest that PV+ cells regulate perceptual learning, "for better and for worse".

Reactivation of critical period plasticity in adult auditory cortex through chemogenetic silencing of parvalbumin-positive interneurons

'Manipulating a specific type of neuron in the auditory cortex of rats can restore their brain plasticity.' ~ Futurity

A Brain without Brakes; Reduced Inhibition Is Associated with Enhanced but Dysregulated Plasticity in the Aged Rat Auditory Cortex

'They say you can’t teach old dogs new tricks, but new research shows you can teach an old rat new sounds' ~ NeuroscienceNews

Dynamic Brains and the Changing Rules of Neuroplasticity: Implications for Learning and Recovery

The quality and quantity of sensory inputs reaching the brain influence the rules of plasticity within cortical sensory areas

Cortical plasticity

Development, learning, aging and the brain