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 .
The effect of methylphenidate on auditory information processing in healthy volunteers: a combined EEG/MEG study
Introduction The psychomotor stimulant methylpheni date ( MPH ) has been shown to improve attentional processes , reflected in behavioural measures such as vigilance , reaction time and visual attention tasks . The neural mechanisms of MPH action on sensory information processing , however , remain poorly understood . To the authors ’ knowledge , this present study is the first to investigate whether a single dose of MPH affects neural substrates of passive attention in healthy adults studied with simultaneous whole-head magnetoencephalography ( MEG ) and electroencephalography ( EEG ) . Methods Monaural left-ear auditory stimuli were presented in an oddball paradigm with infrequent deviant tones differing in frequency and duration . Neuronal activity was recorded with simultaneous whole-head MEG and EEG in 13 healthy subjects ( five females ; aged 27 ± 5 years ) after oral administration of 40 mg MPH or placebo in a r and omised , double-blind , cross-over design . We analysed both electric and magnetic N100 , P200 and mismatch negativity ( MMN ) components . Results MPH  increased arousal levels in visual analogue scales  . MPH had no effect on the dipole strength of MMN or MMNm in either frequency or duration deviations . MPH did , however , reduce P200 amplitudes in EEG . Conclusions The lack of effect of MPH on either MMN or MMNm suggests no association between catecholaminergic activities and MMN generation . However , our findings imply that MPH may change the neural bases of auditory information processing such as the early stimulus evaluation reflected in the P200 component . Dopamine and noradrenaline neurotransmitter systems could be responsible for the modulation of these processes . The exclusive effect of MPH on the P200 component could have a clinical application
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 .