Format

Send to

Choose Destination
See comment in PubMed Commons below
Brain Res. 2006 Nov 20;1120(1):141-50. Epub 2006 Sep 29.

Central odor processing in subjects experiencing helplessness.

Author information

1
Department of Psychology, Christian-Albrechts-University of Kiel, FRG, Germany.

Abstract

The aim of the present study was to investigate whether central nervous odor processing is affected by the temporary experience of helplessness. To induce helplessness, an unsolvable social discrimination test in combination with false feedback was used. The EEG was recorded from 60 scalp locations, while two standard odors were presented via a constant-flow olfactometer. Helplessness attenuated olfactory stimulus processing at an early perceptual stage: the P2 and P3-1 amplitudes were reduced in response to both odors. Furthermore, the early potentials (N1, P2 and P3-1) of the chemosensory event-related potential (CSERP) appeared with longer latencies when subjects received negative feedback. The state effects of helplessness resemble the deviations in the CSERP found in depressed patients, suggesting a general mood effect.

PMID:
17010951
DOI:
10.1016/j.brainres.2006.08.090
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center