Practice question

Temporal resolution defines minimal interval needed to separate successive events. Neuronal communication occurs in milliseconds, requiring recording systems with kilohertz sampling. Electroencephalography directly measures scalp voltage fluctuations at 250-2000 Hz, instantly capturing evoked potentials, epileptic spikes and oscillatory changes. In contrast, computed tomography requires seconds for gantry rotation and reconstruction, magnetic resonance imaging needs seconds for pulse sequences and hemodynamic lag, positron emission tomography depends on tracer accumulation over minutes. Therefore EEG offers superior temporal precision among structural and metabolic imaging methods.