text: <unk>  is the branch of neuroscience devoted to the study of neurochemicals. A neurochemical is an organic molecule that participates in neural activity. This term is often used to refer to neurotransmitters and other molecules such as neuro-active drugs that influence neuron function.
option_0: Neurochemistry
option_1: Spectroscopy
option_2: Biomarker
option_3: Hemodynamics
option_4: Neural network
option_5: Oxygenation
option_6: Pharmacology
option_7: Nanosensor