Temporal Mechanisms of Brain Oscillations: The Role of Inhibition, Delays, and Synaptic Time Scales

Dr. Alireza Valizadeh

Institute for Advanced Studies in Basic Sciences (IASBS) & Instituto Zapata-Briceño de Neurociencia

Resumen/Abstract

Brain oscillations emerge from the dynamic interplay between excitation and inhibition in neuronal networks, shaping information processing and coordination across brain regions. While inhibitory neurons are crucial for rhythm generation and stabilization, the precise temporal scales of synaptic interactions further define the dynamical properties of these oscillations. In this talk, I will first review the general mechanisms underlying oscillation generation, emphasizing the role of negative feedback loops operating at different time scales in shaping brain rhythms across a broad frequency range. I will then focus on how transmission and synaptic delays, together with the synaptic time constants of inhibitory neurons, determine the dynamical pattern of brain's networks oscillations.

Curriculum ponente

Dr. Alireza Valizadeh obtained his PhD in theoretical condensed matter physics from the Institute for Advanced Studies in Basic Sciences (IASBS). He is currently a professor in the Department of Physics and head of the Theoretical Neuroscience Laboratory at IASBS, as well as a principal investigator at the Zapata-Briceño Institute of Neuroscience in Madrid (Scholar page).