Neurotransmitters: These are chemical messengers that transmit signals between neurons, influencing activity levels in different areas of the brain.
Electroencephalogram (EEG): A technique used to measure and record electrical activity in the brain by placing electrodes on the scalp.
Functional Magnetic Resonance Imaging (fMRI): A method that detects changes in blood flow to infer neural activity, providing detailed images of brain regions involved in specific tasks or mental processes.