Immediate and medium-term changes in cortical and hippocampal inhibitory neuronal populations after Diffuse TBI.

•Time-dependent, brain area-specific changes in inhibition post diffuse TBI.•Reduction in dendrite-targeting interneurons in cortex and hippocampus 24 h post TBI.•Susceptibility of dendrite-targeting inhibitory neurons to diffuse TBI.•Compensatory interneuronal changes 2 weeks post TBI in cortex and hippocampus.