Simultaneous enhancement of stimulus-induced and stimulus-free gamma in open-eye meditators.
Imaging neuroscience (Cambridge, Mass.) 2026 Ankan Biswas, Srishty Aggarwal, Kanishka Sharma et al.
Visual stimuli-induced "narrowband" gamma oscillations (30-70 Hz) are generated due to excitation-inhibition interactions and are linked to attention/binding. These oscillations attenuate with aging and neurodegeneration, potentially indicating declining inhibitory function. In contrast, meditation enhances endogenous stimulus-free gamma (power in a broad frequency range above 25 Hz). However,...