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 .
Assessment of CNS effects of antiepileptic drugs by using quantitative EEG measures.
PURPOSE Antiepileptic drugs ( AEDs ) can be associated with adverse neurologic effects including cognitive dysfunction . Objective methods for recognizing AED effects on the brain could be valuable for long-term management . We compared quantitative EEG measures and cognitive tests in a group of patients beginning or ending AED therapy .  METHODS Subjects included 20 patients beginning AED therapy ( AEDon ) , 12 patients stopping AED therapy ( AEDoff ) , 33 patient controls receiving stable AED therapy ( AEDco ) , and 73 healthy controls ( Nco ) . All subjects underwent structured EEG recording and a cognitive test battery before change in AED dose and again 12 - 16 weeks later , > or=4 weeks after the last dose change . Four occipital EEG measures ( peak frequency , median frequency , relative theta and delta power ) were analyzed . Cognitive test changes were scored by using test-retest regression equations based on the Nco subjects . Wilcoxon tests were used for two-group comparisons . RESULTS AEDons had a significant decrease , and AEDoffs , a significant increase in the peak frequency of the EEG rhythm , as compared with controls . Results for median frequency and theta power were similar . Change in the EEG peak frequency correlated with an aggregate cognitive change measure ( r2= 0.71 ; p < 0.001 ) , individual cognitive measures , and subjective complaints . Of the combined AEDon/AEDoff patients , 58 % exceeded the 95 % confidence interval for test-retest change in EEG peak frequency . CONCLUSIONS Quantitative measures derived from the occipital EEG are sensitive to AEDs and correlate with AED-related cognitive effects and subjective complaints . Although this correlation does not indicate a direct relation , quantified EEG may be a practical measure of AED impact on the brain
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 .