Design of a fully integrated multi-channel implantable brain-computer interface electrical stimulation system
10.3760/cma.j.cn121382-20231125-00204
- VernacularTitle:一种全集成多通道植入式脑机接口电刺激系统设计
- Author:
Qi TANG
1
;
Yixin XUE
;
Zhaohui BU
;
Qibin ZHENG
;
Jiayu LIU
Author Information
1. 上海理工大学健康科学与工程学院，上海 200093
- Keywords:
Chips;
Brain-computer interface;
Implanted electrode;
System design
- From:
International Journal of Biomedical Engineering
2024;47(2):123-130
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To design a fully integrated multi-channel implantable brain-computer interface electrical stimulation system.Methods:The human-computer interaction interface of the upper computer was set by users, and the data was packaged via a self-built protocol. When parameters were transmitted to the field programmable gate array (FPGA) chip through the Bluetooth module, the stimulation chip was controlled after the parameter analysis was completed. Eventually the user-set current stimulation was output. To verify the system feasibility, the accuracy of the single-channel stimulation waveform, the multi-channel output capability, and the adjustable range of the parameter were tested separately.Results:It realized 16 channels of time-sharing differential stimulation current output, the output stimulation current waveform was dual-phase equal-width pulse, the amplitude ranged within 4~1 000 μA, the pulse single-phase width range was 10~1 000 μs, the cycle time was 1~1 000 ms, thus the current parameters could be accurately adjusted.Conclusions:A fully integrated multi-channel implantable brain-computer interface electrical stimulation system was completed.
