Microelectrode Recordings
Microelectrode Recordings - Related Videos
03:25
Recording Neural Activity of Unfolded Hippocampal Tissue Using Penetrating Microelectrode Array
0 Views •
2025
This video demonstrates the procedure to set up a recording chamber with a penetrating microelectrode array (PMEA) to capture neural signals from an unfolded hippocampus. This method allows us to study the speed and direction of propagation of neural activity within the unfolded hippocampus in vitro.
02:56
Ultrasound-Induced Neuromodulation Using a Microelectrode Array System
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2025
This video demonstrates the method for inducing the modulation of neural activity in cultured human iPSC-derived neurons in a multi-well microelectrode array, or MEA system using a focused ultrasound transducer.
03:39
Implanting a Wireless Bidirectional Microelectrode System in a Rat Brain
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2025
The video demonstrates a procedure for implanting a wireless bidirectional multichannel electrode unit into a rat brain to record and stimulate multichannel neural networks.
11:28
Recording Network Activity in Spinal Nociceptive Circuits Using Microelectrode Arrays
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Cited by 1 •
2022
The combined use of microelectrode array technology and 4-aminopyridine-induced chemical stimulation for investigating network-level nociceptive activity in the spinal cord dorsal horn is outlined.
06:59
High-density EEG Recordings of the Freely Moving Mice using Polyimide-based Microelectrode
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Cited by 33 •
2011
In this article, we described the surgery procedure and handling tips for implantation of ultra-thin polyimide-based microelectrode array (PBM-array) on the mouse skull for acquisition of high-density encephalography (EEG) in a mouse model.
FAQs
Voltage measurements track electrical differences associated with cellular membrane behavior, whereas current measurements examine electrical flow during cellular activity. The electrode signal is amplified so small changes become recordable and interpretable. Comparing these electrical properties helps researchers characterize excitability, ion-channel activity, action potentials, and synaptic responses in individual cells or small cellular groups.
Electrode placement determines which electrical signals can be examined most directly. An electrode positioned inside a cell can assess membrane potential and related cellular excitability, while an electrode near the cell can capture electrical activity without occupying the cell interior. This distinction helps investigators select measurements suited to cellular signals, communication, or activity patterns.
These recordings can separate several levels of electrical behavior, including membrane potential, ion-channel activity, action potentials, and synaptic responses. Membrane potential reflects the cell’s electrical state, while action potentials represent prominent electrical events and synaptic responses indicate communication-related activity. Examining these signals together provides a more detailed view of how cells become active and communicate.
Disease states and drug exposure can change the electrical behavior measured from neurons, cardiac cells, or muscle cells. Recordings make those changes observable through altered cellular excitability, ion-channel activity, action potentials, or synaptic responses. Medical researchers can therefore compare electrical patterns across conditions to investigate disease mechanisms and evaluate how experimental compounds influence cell function.
A typical recording begins by positioning a conductive microscale electrode inside or near the cell of interest. Electrical differences are then detected, amplified, and recorded for analysis. Researchers select signals relevant to the question, such as membrane potential, ion-channel activity, action potentials, or synaptic responses, and use the resulting measurements to characterize cellular function.
They are useful when investigators need cellular-level information about neuronal, cardiac, or muscular function. The technique supports studies of normal electrical behavior as well as changes caused by disease or drugs. It can also contribute to evaluating experimental therapies by showing whether treatment-related effects are associated with altered cellular excitability or communication.
Measurements from individual cells or small groups of cells can be combined to investigate patterns of neural-circuit activity and communication. This cellular perspective also supports development of diagnostic and bioelectronic technologies by supplying information about electrical behavior that such technologies may need to detect, interpret, or influence. The approach therefore connects basic electrophysiology with translational medical research.