Somatosensory Cerebral Evoked Responses in Psychotic Depression

摘要: Recent methodological developments suggested reasons to doubt the validity of conclusions derived from previous results showing that amplitude and recovery function averaged somatosensory cerebral evoked responses differ normal in patients with psychotic depressions. This study was carried out verify extend earlier findings methods designed overcome faults investigations. Somatosensory functions were measured 21 depressions non-patient controls matched for age sex. Latency eight peaks each response. Results confirmed initial component less controls, particularly during first 20 msec. They did not confirm unpaired stimuli are larger depression, suggesting differences may have been due lack control age. Some later yielded additional statistically significant between none which as great component. There some concordance measures latency same peaks, operation different mechanisms. Evoked response characteristics varied considerably respect sex, emphasizing need those factors.