100-channel neural-recording IC achieves record low power consumption
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The joint team from IME, NTU and NUS developed a 100-channel neural-recording IC with a record low power consumption of 0.94mW per channel and the ability to deliver high quality signal recording. Compared to current state-of-the-art neural recording ICs, the Singapore-developed IC can operate at just 0.45V supply voltage, half of what is typically required to achieve similar performance.
The 100-channel IC chip was tested recording the neural signals of an anesthetized Sprague-Dawley rat. The researchers say that such a breakthrough minimises the patient’s exposure to electromagnetic radiation and heat during the recording process, making it possible to integrate hundreds of channels.
This can be used to acquire more comprehensive profile of brain signals for artificial limb control or for the treatment of paralyzed patients. The system comprises multiple electrodes for data acquisition and is implanted within the skull during the operation.
“To realise a fully implantable neural recording system, we are also working with other departments on the neural probe design and materials, as well as the incorporation of drug delivery capability”, said Dr Je Minkyu, Deputy Director of the Integrated Circuits and Systems Laboratory at IME in a statement.
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