ArticleBehavioural brain research2010
Sensory and sensorimotor gating-disruptive effects of apomorphine in Sprague Dawley and Long Evans rats.
Article in Behavioural brain research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 16 citations in OpenAlex.
- The Role of Antioxidants in the Connection Between Microbiota, Neuroinflammation and Epilepsy.Biomedicines · 2026Review
- Comparison of Sprague Dawley with Long Evans rats on a battery of widely used neurobehavioral tests.Physiology & behavior · 2025Article
- Pharmacological Mechanisms Involved in Sensory Gating Disruption Induced by (±)-3,4-Methylene- Dioxymethamphetamine (MDMA): Relevance to Schizophrenia.Brain sciences · 2020Article
- Differential effects of antipsychotic and propsychotic drugs on prepulse inhibition and locomotor activity in Roman high- (RHA) and low-avoidance (RLA) rats.Psychopharmacology · 2017Article
- Differential effects of estrogen and testosterone on auditory sensory gating in rats.Psychopharmacology · 2014Article
- Ventral pallidum mediates amygdala-evoked deficits in prepulse inhibition.Behavioral neuroscience · 2012Article
- Disparate effects of pramipexole on locomotor activity and sensorimotor gating in Sprague-Dawley rats.Pharmacology, biochemistry, and behavior · 2011Article
- Dysfunctional play and dopamine physiology in the Fischer 344 rat.Behavioural brain research · 2011Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
rationaleRat strains differ in sensitivity to the disruptive effects of dopamine agonists on sensorimotor gating, measured by prepulse inhibition (PPI) of startle. For example, Sprague Dawley (SD) rats are more sensitive to PPI-disruptive effects of apomorphine (APO) compared to Long Evans (LE) rats; F1 (SDxLE) and N2 generations exhibit intermediate phenotypes. We reported that APO increased S2/S1 ratios and reduced S1 amplitudes of the N40 event-related potential (ERP) in SD rats, suggesting that it reduced sensory gating and/or sensory registration. Here, we investigated whether SD and LE rats differ in sensitivity to APO effects on N40 gating or amplitude.
methodsPPI and N40 gating were assessed contemporaneously in male SD and LE rats after APO, in a 4-day within-subject design.
resultsCompared to SD rats, LE rats were less sensitive to the PPI-disruptive effects of APO. APO increased S2/S1 ratios paralleled by a dose-dependent reduction in S1 amplitude; SD and LE rats did not differ significantly in this measure. No clear relationship was evident between APO effects on PPI and N40 gating, nor between APO effects on startle magnitude and S1 amplitude, across strains.
conclusionSD and LE rats differ in their sensitivity to the disruptive effects of dopamine receptor activation on sensorimotor gating (PPI) but not sensory gating (N40 suppression) or sensory registration (S1 amplitude). These data suggest differences in both the neural and genetic regulation of dopamine agonist effects on these measures.
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