A non-transitory computer-accessible medium having stored thereon computer-executable instructions for determining a functional brain age of a patient during an administration of a compound, wherein, when a computer arrangement executes the instructions, the computer arrangement is configured to perform procedures comprising:
- receiving electroencephalographic (EEG) information for a patient during the administration of the compound to the patient;
- receiving an entropy of the EEG information for the patient during the administration of the compound;
- determining a functional brain age of the patient based on the entropy;
- and
- adjusting the administration of the compound based on the determined functional brain age of the patient.