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P50 Sensory Gating in Infants
Published on: December 26, 2013
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TAAR5 receptor agonist affects sensory gating in rats
Aleksander A Aleksandrov1, Elena S Dmitrieva1, Anna B Volnova2
1Department of Higher Nervous Activity and Psychophysiology, Saint Petersburg State University, St Petersburg, Russia.
Neuroscience Letters
|December 31, 2017
Summary
Higher doses of a Trace Amine-Associated Receptor 5 (TAAR5) agonist, alpha-NETA, significantly reduced sensory gating (SG) in rats. This suggests TAAR5 activation influences how the brain processes sensory information.
Area of Science:
- Neuroscience
- Pharmacology
- Psychiatry
Background:
- Trace amines are structurally similar to classical monoamines.
- Dysregulation of trace amines or their receptors may be implicated in mental health disorders.
Purpose of the Study:
- To investigate the effect of the TAAR5 agonist, alpha-NETA, on sensory gating (SG) in freely moving rats.
- To explore the role of TAAR5 activation in sensory information processing.
Main Methods:
- Sensory gating was assessed using a paired-click paradigm in awake rats.
- Event-related potentials, specifically the N40 component, were measured.
- The SG index was calculated as the difference in N40 amplitudes between the first and second stimulus.
Main Results:
- A low dose (1 mg/kg) of alpha-NETA and saline control had no significant effect on the SG index.
- Higher doses of alpha-NETA (3 and 5 mg/kg) significantly decreased the SG index.
- The decrease in SG was primarily due to reduced N40 amplitude, with the 5 mg/kg dose affecting both stimuli.
Conclusions:
- Activation of TAAR5 influences sensory gating.
- Trace amines and TAAR5 may play a role in the brain's regulation of sensory information flow.
- TAAR5 agonists could be potential therapeutic targets for conditions involving sensory processing deficits.
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