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Home List of Titles Dopamine receptor stimulation does not modulate the loudness dependence of the auditory evoked potential in humans
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/5439
- Dopamine receptor stimulation does not modulate the loudness dependence of the auditory evoked potential in humans
- O'Neill, Barry V.; Croft, Rodney J.; Leung, Sumie; Guille, Valerie; Galloway, Matthew; Phan, K. Luan; Nathan, Pradeep J.
- Rationale: The Loudness Dependence of the Auditory Evoked Potential (LDAEP) has been suggested as a reliable measure of central serotonin function in humans; however, its specificity for the serotonin system remains a topic of debate, with possible modulation of this purported serotonin marker by other neurotransmitters, including dopamine. Objectives: We examined the effect of dopaminergic modulation on the LDAEP using the D1/D 2/D3 dopamine receptor agonist pergolide and the D 2/D3 agonist bromocriptine. Methods: The study was a double-blind, placebo-controlled repeated-measures design in which healthy participants were tested under three acute treatment conditions: placebo, bromocriptine (2.5 mg), and pergolide (0.1 mg). Changes in the amplitude of the N1/P2 at intensities (60, 70, 80, 90, and 100 dB) were examined at C Z. Results: Acute stimulation of D1/D2/D 3 receptors with pergolide and D2/D3 receptors with bromocriptine in comparison with placebo had no effect on the LDAEP. Conclusion: These findings indicate that acute stimulation of dopamine D 1, D2, and D3 receptors does not modulate the LDAEP in humans. Although the findings suggest that the LDAEP may not be modulated by acute changes in dopamine neurotransmission, further studies are needed to fully characterize its dopaminergic sensitivity.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Life and Social Sciences. Brain Sciences Institute
- Psychopharmacology, Vol. 188, no. 1 (2006), p. 92-99
- Publication year
- Biological marker; Bromocriptine; D1; D2; D3; Dopamine; Dopamine receptors; Electrophysiology; Loudness Dependence Auditory Evoked Potentials; Pergolide; Serotonin
- Publisher URL
- Copyright © Springer-Verlag 2006.
- Peer reviewed