Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-5777
Csomor, P A; Yee, B K; Vollenweider, F X; Feldon, J; Nicolet, T; Quednow, B B (2008). On the influence of baseline startle reactivity on the indexation of prepulse inhibition. Behavioral Neuroscience, 122(4):885-900.
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Prepulse inhibition (PPI) of the startle reflex refers to the reduction of the reflexive startle response to an intense pulse stimulus when its presentation is shortly preceded by a weak prepulse stimulus. PPI is considered as a cross-species translational model of sensorimotor gating, and deficient PPI has been reported in a number of neuropsychiatric disorders. Although a part of the literature is based on the assumption that PPI is independent of the baseline startle reaction, there is accumulating evidence (Csomor et al., 2006; Sandner & Canal, 2007; Yee, Chang, Pietropaolo, & Feldon, 2005) that argues against such an independency. The authors systematically investigated whether PPI indexed as percentage or difference score is dependent on the magnitude of baseline startle reactivity in healthy human volunteers and in C57BL/6 mice. The results revealed that both indexations of PPI were affected by the magnitude of the baseline startle. The authors highlight the pitfalls of different methods to index PPI, especially when startle reactivity differs considerably between groups under comparison, and offer practical recommendations to satisfactorily deal with such baseline differences.
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|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||04 Faculty of Medicine > Psychiatric University Hospital Zurich > Clinic for Psychiatry, Psychotherapy, and Psychosomatics|
|DDC:||610 Medicine & health|
|Deposited On:||18 Nov 2008 13:24|
|Last Modified:||28 Nov 2013 01:00|
|Publisher:||American Psychological Association|
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