RESULTS Following an extensive review of selected studies from the 201 articles , the studies indicate that each of the psychotropic medications review ed impact alpha , beta , delta and theta waves independently and differently from each other .
Additionally , certain medications , particularly haloperidol and valproic acid , have dissimilar results exemplified in all waveforms .
OBJECTIVES It is known that psychotropic medications have an impact on the readings found in Electroencephalogram ( EEG ) .
In the field of psychiatry , there are several psychotropics utilized by clinicians .
This review seeks to investigate all the available data for psychotropic drugs and their impact on EEG changes .
Quantitative EEG in Schizophrenic Patients before and during Pharmacotherapy
The aim of the study was to determine the possible differences in quantitative EEG parameters of schizophrenic patients before and during therapy with neuroleptics .  First EEG recordings were obtained from schizophrenic patients ( n = 50 ) who had not been taking any medicaments during the preceding 2 months . Second EEG recordings were obtained during the administration of neuroleptic therapy . Amplitude values of particular spectral segment , i.e. delta , theta , alpha 1 , alpha 2 , beta 1 and beta 2 ( after fast Fourier transformation ) were analyzed . The F3 , F4 , C3 , C4 , T3 , T4 , P3 , P4 , O1 and O2 regions were observed . The effect of pharmacotherapy manifested as a decrease in delta and beta 2 activities . The alterations of the delta spectrum were recorded in each patient subgroup ( regardless of the neuroleptic used ) . The changes in beta 2 activity were registered in patients on haloperidol and fluphenazine
RESULTS Following an extensive review of selected studies from the 201 articles , the studies indicate that each of the psychotropic medications review ed impact alpha , beta , delta and theta waves independently and differently from each other .
Additionally , certain medications , particularly haloperidol and valproic acid , have dissimilar results exemplified in all waveforms .
OBJECTIVES It is known that psychotropic medications have an impact on the readings found in Electroencephalogram ( EEG ) .
In the field of psychiatry , there are several psychotropics utilized by clinicians .
This review seeks to investigate all the available data for psychotropic drugs and their impact on EEG changes .