Multielectrode array recordings of the vomeronasal epithelium

Area of Science:

• Neuroscience
• Sensory Biology
• Electrophysiology

Background:

• Simultaneous recording from numerous neurons is crucial for understanding neural circuits.
• Planar multielectrode arrays (MEAs) are an established in vitro recording technology.
• The mouse vomeronasal organ (VNO) is vital for detecting pheromones and social cues through diverse sensory neurons.

Purpose of the Study:

• To present a novel technique combining MEA recording with robotic liquid handling for studying the mouse VNO.
• To enable simultaneous recording of sensory responses from a large and diverse neuronal population in the VNO.
• To facilitate the assessment of ligand activity and explore properties of VNO receptor neurons.

Main Methods:

• Preparation of the intact mouse VNO neuroepithelium.
• In vitro electrophysiological recording using planar multielectrode arrays (MEAs).
• Automated chemical stimulation using a robotic liquid handler to deliver various ligands.

Main Results:

• Successful simultaneous recording of electrical activity from a large population of VNO neurons.
• Demonstration of the technique's ability to monitor neuronal responses to chemical stimuli over several hours.
• Validation of the method for assessing ligand-induced neuronal activity in the VNO.

Conclusions:

• The described technique provides a powerful tool for in vitro investigation of the mouse VNO.
• This method allows for high-throughput screening of chemical ligands and characterization of VNO sensory neurons.
• It advances the study of neural circuits involved in pheromone detection and social behavior.