In the mammalian brain, information processing and storage rely on complex coding and decoding events performed by neuronal networks. Neuronal circuits manage multiple inputs to compute specific outputs, proposed to underlie memory traces formation, sensory perception, and cognitive behaviors. Spike-timing-dependent plasticity (STDP) and electrical brain rhythms are suggested to underlie these functions, but evidence of assembly structures and mechanisms driving these processes is scarce. This review summarizes the evidence on timing precision, electrical activity, and the role of glial cells in STDP and brain rhythms, as well as their cognitive correlates, limitations, and future perspectives in experimental approaches and human applications.
In the mammalian brain information processing and storage rely on the complex coding and decoding events performed by neuronal networks. These actions are based on the computational ability of neurons and their functional engagement in neuronal assemblies where precise timing of action potential firing is crucial. Neuronal circuits manage a myriad of spatially and temporally overlapping inputs to compute specific outputs that are proposed to underly memory traces formation, sensory perception, and cognitive behaviors. Spike-timing-dependent plasticity (STDP) and electrical brain rhythms are suggested to underlie such functions while the physiological evidence of assembly structures and mechanisms driving both processes continues to be scarce. Here, we review foundational and current evidence on timing precision and cooperative neuronal electrical activity driving STDP and brain rhythms, their interactions, and the emerging role of glial cells in such processes. We also provide an overview of their cognitive correlates and discuss current limitations and controversies, future perspectives on experimental approaches, and their application in humans.
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