title: Multichannel neural recording with a 128 Mbps UWB wireless transmitter for implantable brain-machine interfaces.
abstract: To realize a low-invasive and high accuracy BMI (Brain-machine interface) system, we have already developed a fully-implantable wireless BMI system which consists of ECoG neural electrode arrays, neural recording ASICs, a Wi-Fi based wireless data transmitter and a wireless power receiver with a rechargeable battery. For accurate estimation of movement intentions, it is important for a BMI system to have a large number of recording channels. In this paper, we report a new multi-channel BMI system which is able to record up to 4096-ch ECoG data by multiple connections of 64-ch ASICs and time division multiplexing of recorded data. This system has an ultra-wide-band (UWB) wireless unit for transmitting the recorded neural signals to outside the body. By preliminary experiments with a human body equivalent liquid phantom, we confirmed 4096-ch UWB wireless data transmission at 128 Mbps mode below 20 mm distance.
authors.forename: H
authors.initials: H
authors.lastname: Ando
authors.forename: K
authors.initials: K
authors.lastname: Takizawa
authors.forename: T
authors.initials: T
authors.lastname: Yoshida
authors.forename: K
authors.initials: K
authors.lastname: Matsushita
authors.forename: M
authors.initials: M
authors.lastname: Hirata
authors.forename: T
authors.initials: T
authors.lastname: Suzuki
mesh_terms: D062207:Brain-Computer Interfaces; D000069280:Electrocorticography / Q000295:instrumentation*; D004566:Electrodes; D006801:Humans; D058117:Neural Prostheses; D059015:Wireless Technology / Q000295:instrumentation*