Traumatic Brain Injury Preserves Firing Rates But Disrupts Laminar Oscillatory Coupling and Neuronal Entrainment in Hippocampal CA1
Koch et al. from John Wolf’s Lab published their study on functional status of hippocampal neurons after traumatic brain injury (TBI). A NeuroNexus 32-channel probe (A1X32-Poly2-5mm-50s-177-H32) was used for laminar recording in CA1 in a rat TBI model. They reported that hippocampal CA1 single-unit activity post-TBI can maintain a normal firing rate despite significantly reduced, layer-specific loss of input. However, maintaining normal synchronization to the dominant oscillations within the hippocampus is impaired.
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