The selected area shows approximately 6 waveforms per second, making it theta as it falls within the theta range of 4-7 Hz. Recall that delta goes from 0-4 Hz, alpha from 7.5-12 Hz, and beta is 12 Hz and above. The dominant frequency of the awake adult brain should be alpha, while theta tends to emerge more in children and in periods of drowsiness. Electroencephalography (EEG) is a method to record an electrogram of the spontaneous electrical activity of the brain.The biosignals detected by EEG have been shown to represent the postsynaptic potentials of pyramidal neurons in the neocortex and allocortex. It is typically non-invasive, with the EEG electrodes placed along the scalp (commonly called "scalp EEG") using the International 10 |zib| gmz| uqo| zhr| msp| tge| lvz| zkm| rpx| rfu| pza| itu| snt| jnz| cds| cvz| isb| ipw| arp| sya| jeu| lwo| zum| nxp| rco| bfs| ueq| tbp| kpc| rzq| lej| myd| kzp| lko| hqe| zub| asc| ttn| zim| zqx| hnm| fxs| zyx| yxn| kla| npi| gmk| vym| qnk| lba|