Annals of sex research

, Volume 1, Issue 1, pp 49–62 | Cite as

Quantitative EEG investigations of genital exhibitionism

  • P. Flor-Henry
  • R. A. Lang
  • Z. J. Koles
  • R. R. Frenzel
Article

Abstract

Forty-three male genital exhibitionists and 46 normal controls, all right handed, and matched for age, sex, and education, were studied with quantitative EEG during resting conditions, with eyes open and eyes closed, and during two cognitive tasks (Vocabulary subtest of the WAIS-R, oral word fluency), and during spatial cognitive processing (Block Design subtest of the WAIS-R). Results indicated that EEG Power and Coherence were significantly different in the exhibitionist group, particularly during verbal processing. The findings occurred in the delta, theta, and alpha frequencies and were of increased power and reduced inter-hemispheric coherence. No significant findings emerged between groups during visual-spatial cognitive activation in any frequency bands or conditions, neither in terms of power nor coherence. These results are consistent with the growing body of evidence which suggests that sexual anomalies in the male relate to altered left hemispheric functions with disruption of inter-hemispheric relationships.

Keywords

Normal Control Frequency Band Block Design Cognitive Task Significant Finding 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Annet, M. (1970). A classification of hand preference by association analysis.British Journal of Psychology, 61, 303–320.Google Scholar
  2. Baker, L. (1985). Neuropsychological and power spectral EEG characteristics of exhibitionists: a model of sexual deviation. Unpublished Doctoral Dissertation, Department of Educational Psychology, University of Alberta, Edmonton.Google Scholar
  3. Benigus, V.A. (1969). Estimation of the coherence spectrum and its confidence intervals using the Fast Fourier Transform.IEEE Trans. Audio and Electroacoustics, 17, 145.Google Scholar
  4. Brillinger, D.R. (1981).Time Series, Data Analysis and Theory. (pp. 309–313). San Francisco: Holden Day Inc.Google Scholar
  5. Cassens, G., Ford, M., Lothstein, L. & Gallenstein, T. (1988). Neuropsychological dysfunction and brain-imaging studies of paraphiles: preliminary studies.Journal of Clinical and Experimental Neuropsychology, 10, 73.Google Scholar
  6. Flor-Henry, P. (1980). Cerebral aspects of the orgasmic response: normal and deviational. In R. Forleo & W. Pasini (Eds.),Medical Sexology (pp. 256–262). Amsterdam, New York and Oxford: Elsevier-North Holland.Google Scholar
  7. Flor-Henry, P. (1987). Cerebral aspects of sexual deviation. In G.D. Wilson (Ed.), Variant Sexuality: Research and theory. pp. 49–81. Beckenham, Kent: Croom Helm Ltd.Google Scholar
  8. Flor-Henry, P., Koles, Z.J., Reddon, J.R., Baker, L. (1986). Neurophysiological studies (EEG) of exhibitionism. In C. Shagass, R.C. Josiassen & R.A. Roemer (Eds.),Brain Electrical Potentials and Psychopathology (pp279–306). The Netherlands: Elsevier Science Publishing Co.Google Scholar
  9. Hucker, S., Langevin, R., Wortzman, G., Bain, J., Handy, L., Chambers, J. & Wright, S. (1986). Neuropsychological impairment in pedophiles.Canadian Journal of Behavioral Science, 18, 440–448.Google Scholar
  10. Hucker, S., Langevin, R., Dickey, R., Handy, L., Chambers, J., & Wright, S. (1988). Cerebral damage and dysfunction in sexually aggressive men.Annals of Sex Research, 1, 13.Google Scholar
  11. Kolarsky, A., Freund, K., Machek, J., & Polak, O. (1967). Male sexual deviation: association with early temporal lobe damage.Archives of General Psychaitry, 17, 735–743.Google Scholar
  12. Koles, Z.J. & Flor-Henry, P. (1981). Mental activity and the EEG: task and workload related effects.Medical and biological Engineering and Computing, 19, 185–194.Google Scholar
  13. Langevin, R., Bain, J., Ben-Aron, M.H., Coulthard, R., Day, D., Handy, L., Heasman, G., Hucker, S., Purins, J.E., Roper, V., Russon, A.E., Webster, C.D., & Wortzman, G. (1985). Sexual Aggression: constructing a predictive equation. In R. Langevin (ed.)Erotic Preference, Gender Identity, and aggression in men. Hillsdale, New Jersey: Lawrence Erlbaum Associates.Google Scholar
  14. Morrison, D.F. (1976).Hotelling T 2 and Scheffe individual comparisons, Second Edition, (pp. 128–141). New York: Mcgraw Hill Book Co.Google Scholar
  15. Purins, J.E., & Langevin, R. (1985). Brain correlates of penile erection. In R. Langevin (Ed.)Erotic Preference, Gender Identity, and aggression in men. Hillsdale, New Jersey: Lawrence Erlbaum Associates.Google Scholar
  16. Scott, M.L., Cole, J.K., McKay, S.E., Golden, C.J., & Liggett, K.R. (1984). Neuropsychological performance of sexual assaulters and pedophiles.Journal of Forensic Sciences, 29, 1114–1118.Google Scholar
  17. Welch, P.D. (1967). The use of the fast fourier transform for the estimation of power spectra: a method based on time averaging over short modified periodograms.IEEE Trans Audio and Electroacoustics, 15, 70–73.Google Scholar
  18. Yeudall, L.T., Fedora, O., Schopflocher, D., Reddon, J.R., & Hyatt, P. (1986). Neuropsychological characteristics of different types of sexual offenders. Department of Neuropsychology, Alberta Hospital, Edmonton, Research Bulletin 125.Google Scholar

Copyright information

© Juniper Press 1988

Authors and Affiliations

  • P. Flor-Henry
    • 1
  • R. A. Lang
    • 1
  • Z. J. Koles
    • 2
  • R. R. Frenzel
    • 3
  1. 1.Alberta Hospital EdmontonCanada
  2. 2.Department of Applied Sciences In MedicineUniversity of AlbertaCanada
  3. 3.Alberta Hospital EdmontonCanada

Personalised recommendations