On the influence of baseline startle reactivity on the indexation of prepulse inhibition.
Behav Neurosci
; 122(4): 885-900, 2008 Aug.
Article
en En
| MEDLINE
| ID: mdl-18729642
ABSTRACT
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.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Reflejo Acústico
/
Reflejo de Sobresalto
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Inhibición Psicológica
Tipo de estudio:
Guideline
/
Prognostic_studies
Límite:
Adult
/
Animals
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Humans
/
Male
Idioma:
En
Revista:
Behav Neurosci
Año:
2008
Tipo del documento:
Article
País de afiliación:
Suiza