NEURAL SPIKE SCANNING FOR HIGH-DENSITY IMPLANTABLE NEURAL RECORDING SYSTEMS

A neural signal recording device includes a scan-mode circuit and a read-mode circuit. The scan-mode circuit detects neural spike activity within any M groups of electrodes selected from a total of N electrodes that are coupled to a brain. The read-mode circuit then records all neural spike signals present within any one of the M groups of electrodes where the neural spike activity is detected by the scan-mode circuit, whereby less than N electrodes are recorded at any one time by the neural signal recording device.