Biological recording device and method for recording biological electrical activity

摘要

A biological recording device used to monitor biological electrical activity and a method of recording neural signals. In a preferred embodiment, the biological recording device is a neural probe. The biological recording device includes a probe body with a probe shank and a recording platform that uses a delta (Δ) modulator and a delta sigma analog to digital converter (ΔΣ ADC). The Δ modulator and the ΔΣ ADC form a Δ-ΔΣ analog front end (AFE) architecture for processing biological electrical activity. A large dynamic range (DR) of neural signals, including local field potentials (LFPs) and action potentials (APs) for example, can be compressed and subsequently reconstructed.