Title :
A remote constant current stimulator designed for rat-robot navigation
Author :
Xi Chen ; Kedi Xu ; Shuming Ye ; Songchao Guo ; Xiaoxiang Zheng
Author_Institution :
Qiushi Acad. for Adv. Studies (QAAS), Zhejiang Univ., Hangzhou, China
Abstract :
In this paper, a remote stimulator is developed for rat-robot navigation based on the technique of Brain-Computer-Interface (BCI). The stimulator can output constant current from 0 to 1000 μA, which overcome several shortages of our previous constant voltage stimulator. The constant current stimulator consists of four major components, including power supply, micro control unit (MCU), constant current source and bluetooth transceiver for downloading stimulation commands. The stimulator has a weight of about 20g and size of 32mm*25mm*6mm. It has five channels of stimulation, which are connected with implanted microelectrodes in rat brain. The electrical parameters were characterized on three rats with different recovery time after brain surgery. Increasing current stimulations were applied on the dorsolateral periaqueductal gray (dlPAG) area to prove the effect of current stimulation on rat behavior.
Keywords :
Bluetooth; bioelectric potentials; biomedical electrodes; biomedical electronics; biomedical telemetry; brain; brain-computer interfaces; medical robotics; microcontrollers; microelectrodes; neuromuscular stimulation; power supply circuits; surgery; bluetooth transceiver; brain surgery; brain-computer-interface technique; constant voltage stimulator; current 0 muA to 1000 muA; dorsolateral periaqueductal gray area; electrical parameter; mass 20 g; microcontrol unit; microelectrode implant; power supply; rat brain; rat-robot navigation; remote constant current stimulator; stimulation channel; stimulation command downloading; Animals; Bluetooth; Educational institutions; Microelectrodes; Navigation; Power demand; Resistance;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2013 35th Annual International Conference of the IEEE
Conference_Location :
Osaka
DOI :
10.1109/EMBC.2013.6609964
