Exp Neurobiol.  2018 Feb;27(1):57-64. 10.5607/en.2018.27.1.57.

Development of Electrical Neural Stimulator Generating Periodic and Non-periodic Signals and Supporting Closed-loop Experimental System

• An H
• Shin HC

• KMID: 2405309
• DOI: http://doi.org/10.5607/en.2018.27.1.57

Abstract

It is essential to build a system to generate proper neural stimulus signals with adjusting parameters. We developed a stimulator with up to four channels for separate settings in periodic and non-periodic modes. The device can support a closed-loop experimental system which utilizes neural information in real time as a feedback for controlling stimuli. To confirm whether stimulating signals are properly produced and delivered inside the brain, two experiments with rats were conducted. We observed that the change of firing rates and the cross-power spectral density increased after stimulation which meant that electric signals were transferred well and that they affected the neurons' activities. Thus, it is expected that the stimulator can be utilized to produce appropriate stimulation signals in accordance with various objectives.

Keyword

stimulator; brain stimulation; electrical stimulation; neuron; closed-loop system

MeSH Terms

Animals
Brain
Electric Stimulation
Fires
Neurons
Rats