Document Detail


Brain potentials related to the human penile erection.
MedLine Citation:
PMID:  19587685     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to elucidate the brain processes preceding penile responses. Electroencephalographic (EEG) potentials and penile circumference were recorded simultaneously while male subjects were exposed to visual sexual stimuli (VSS). The trials were sorted by the penile response of the subjects (erection, maintenance or detumescence). The corresponding EEG recordings were then subjected to independent component analysis. We found that 200 ms after VSS onset brain potentials differ according to the genital response to follow. Whereas early posterior negativity (EPN) was predominantly related to erection and maintenance, P3-like activity was found to precede detumescence. EPN indicates a more 'emotional' processing state of the brain, whereas P3-like activity related to detumescence indicates a more 'cognitive' processing state. The latter is assumed to reflect activity of the locus coeruleus-norepinephrine system. Further research should evaluate the contribution of P3-related brain activity to psychogenic erectile dysfunction.
Authors:
J Ponseti; P Kropp; H A Bosinski
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Publication Detail:
Type:  Journal Article     Date:  2009-07-09
Journal Detail:
Title:  International journal of impotence research     Volume:  21     ISSN:  1476-5489     ISO Abbreviation:  Int. J. Impot. Res.     Publication Date:    2009 Sep-Oct
Date Detail:
Created Date:  2009-09-14     Completed Date:  2009-12-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9007383     Medline TA:  Int J Impot Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  292-300     Citation Subset:  IM    
Affiliation:
Section of Sexual Medicine, Christian-Albrechts-University of Kiel, Kiel, Germany. ponseti@sexmed.uni-kiel.de
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MeSH Terms
Descriptor/Qualifier:
Adult
Brain / physiology*
Data Interpretation, Statistical
Electroencephalography*
Evoked Potentials / physiology*
Humans
Male
Manometry
Penile Erection / physiology*,  psychology
Photic Stimulation
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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