Background
Sex influences is important to understand behavioral manifestations in a large number of neuropsychiatric disorders. We found electrophysiological differences specifically related to the influence of sex on psychopathic traits.
Methods
The resting electroencephalography (EEG) activity and low-resolution brain electromagnetic tomography (LORETA) for the EEG spectral bands were evaluated in 38 teenagers with conduct disorder (CD). The 25 male and 13 female subjects had psychopathic traits as diagnosed using the Antisocial Process Screening Device. All of the included adolescents were assessed using the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR) criteria. The visually inspected EEG characteristics and the use of frequency-domain quantitative analysis techniques are described.
Results
Quantitative EEG (QEEG) analysis showed that the slow-wave activities in the right frontal and left central regions were higher and the alpha-band powers in the left central and bitemporal regions were lower in the male than the female psychopathic traits group. The current source density showed increases in paralimbic areas at 2.73 Hz and decreases in the frontoparietal area at 9.37 Hz in male psychopathics relative to female psychopathics.
Conclusions
These findings indicate that QEEG analysis and techniques of source localization can reveal sex differences in brain electrical activity between teenagers with CD and psychopathic traits that are not obvious in visual inspections.

Citations

• International perspectives on psychopathy research: An introductory essay
  Alan R. Felthous, Henning Saß
  Behavioral Sciences & the Law.2021; 39(5): 507.     CrossRef
• The comparative effectiveness of parental behavior management training and schema therapy on aggression and oppositional defiant in adolescents
  Saeede Mohammad Hasani, Parviz Askary, Alireza Heidari, Parvin Ehtesham Zadeh
  Journal of Nursing and Midwifery Sciences.2020; 7(3): 146.     CrossRef
• Sex Differences in QEEG in Psychopath Offenders
  Ana Calzada-Reyes, Alfredo Alvarez-Amador, Lídice Galán-García, Mitchell Valdés-Sosa
  Clinical EEG and Neuroscience.2020; 51(3): 146.     CrossRef
• Resting State Healthy EEG: The First Wave of the Cuban Normative Database
  Jorge Bosch-Bayard, Lidice Galan, Eduardo Aubert Vazquez, Trinidad Virues Alba, Pedro A. Valdes-Sosa
  Frontiers in Neuroscience.2020;[Epub]     CrossRef

Background
ad Aims : Nerve conduction study is invaluable in clinical neurology, especially for assessing peripheral neuropathies. Abnormal nerve conduction studies may result not only from peripheral nerve dysfunction itself, but also from other various mechanical, technical, and physiological factors such as age, sex, height and temperature. So we conducted this study to establish the our own normal values. Methods : In this study, from March. 1997 to July. 1998, 40 Korean adults among person came to Health Promotion extremity and distal segments. Physiological factors such as age, height and temperature affect the results of nerve conduction studies in multiple regression analysis. The sex difference is recognized over peroneal motor nerve. There are no sex difference in amplitude transformed into normal distribution. The significant physiological factor affecting