Paired electrodes

Manufactured by Biopac

Sourced in United States

Paired electrodes are a type of electrode used in various biomedical applications to measure electrical signals. They consist of two conductive surfaces that are placed in close proximity to each other. The core function of paired electrodes is to detect and record electrical activity, such as muscle contractions or neural signals, by measuring the potential difference between the two electrode surfaces.

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Lab products found in correlation

Stmisola, by Biopac (2 mentions) Matlab software, by MathWorks (2 mentions) Mri compatible electrodes, by Biopac (1 mentions) Mp160 system, by Biopac (1 mentions)

2 protocols using paired electrodes

Multimodal Neuroimaging and Physiological Monitoring

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During the initial in-lab visit, all tasks were completed on a Dell OptiPlex 7040 computer (Dell) equipped with MATLAB software (MathWorks), and Psychophysics Toolbox extensions (Brainard, 1997 (link)). Stimuli were presented on a Dell P2717H monitor. The participants viewed the monitor from a distance of ∼70 cm in a dimly lit room. Paired electrodes (BioPac Systems) were attached to the left forearm of each participant, and electric shocks were delivered through an isolated linear stimulator under the constant current setting (STMISOLA, BioPac Systems), which were controlled by custom MATLAB scripts.
For the fMRI portion of the experiment, stimulus presentation was controlled by an in vivo SensaVue display system. The eye-to-screen distance was ∼125 cm. Key responses were entered using Cedrus Lumina two-button response pads. MRI-compatible electrodes (BioPac Systems) were attached to the left ankle of each participant, and electric shocks was delivered through an STM100C controlled by an MP160 system (BioPac Systems) triggered by custom MATLAB scripts via parallel port interface. An EyeLink 1000 Plus system was used to track eye position (SR Research Ltd.).

Kim A.J, & Anderson B.A. (2020). Arousal-Biased Competition Explains Reduced Distraction by Reward Cues under Threat. eNeuro, 7(4), ENEURO.0099-20.2020.

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Auditory Threat Conditioning with Electric Shocks

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A Dell OptiPlex 7040 (Dell, Round Rock, TX, USA) equipped with MATLAB software (Mathworks, Natick, MA, USA) and Psychophysics Toolbox extensions (Brainard, 1997 (link)) was used to present the stimuli on a Dell P217H monitor. The participants viewed the monitor from a distance of approximately 70 cm in a dimly lit room. Participants also wore Beyerdynamic DT 770 Pro 250Ω professional studio headphones (Beyerdynamic, Heilbronn, Germany) to listen to all sounds. For participants in the threat condition, paired electrodes (BioPac Systems, Inc., Goleta, CA, USA) were attached to the left forearm of each participant and electric shocks were delivered through an isolated linear stimulator under the constant current setting (STMISOLA, BioPac Systems), which were controlled by custom Matlab scripts. Motor responses to the auditory stimuli were made on a Millikey MH-5 response box (LabHackers Research Equipment, Halifax, Canada).

Kim A.J, & Anderson B.A. (2021). How Does Threat Modulate the Motivational Effects of Reward on Attention?. Experimental psychology, 68(3), 165-172.

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