Wireless Headstage System

Wireless Data Sheet

Features

• Wireless range of up to five feet
• Rechargeable battery delivers from five up to 24 hours of operation
• Supports 15 channels
• Headstage weighs less than 10 grams

Description

The Plexon/TBSI wireless headstage system provides a wireless connection between implanted neural electrodes and Plexon's MAP or Recorder neural recording system. This system enables untethered neural recording from freely-behaving animals via a high-channel-count wireless device that is small and lightweight.

The system consists of a headstage transmitter, a rechargeable battery integrated directly into the headstage, and a signal receiver/DSP-based signal-processing system. The rechargeable integrated battery powers the headstage transmitter for up to five hours. An optional battery pack delivers up to 24 hours.

The receiver system consists of a radio-frequency (RF) receiver/baseband demodulator that is powered by an included AC to DC power adapter.

Headstage

The headstage transmitter is a wireless neural device that enables researchers to continuously and simultaneously monitor up to 15 neural electrodes. Experiments are no longer constrained by the need to wire a test subject to the recording system.

The headstage is available in two configurations:

• A 10-gram unit with the transmitter and battery integrated into the headstage
• An eight-gram unit with the transmitter integrated into the headstage and a 24-hour backpack battery

Signal-Processing Unit

The RF receiver signal is demodulated by a proprietary signal-processing system that uses a high-speed analog to digital converter. The demodulated signal is then conditioned by a digital signal processor (DSP) and converted back to an analog signal for output via a DB37 female connector.

Deployments of this system include studies involving rats, rabbits, and monkeys. The system ships with several alternate mounting mechanisms and cables that are terminated for the user’s specific laboratory recording system.

An illustration of a typical Plexon/TBSI wireless application using the 10-gram headstage with integrated battery.

The system incorporates a unique wireless ASIC design with neural preamplifier circuitry, which results in a unit that is small enough to mount on a subject’s head. The unit transmits neural activity from the test subject to the recording system.

System level diagram

Technical Specifications - Wireless Headstage