Reliable, High-Density, Wide Bandwidth Telemetry

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FreeLynx behavior arena diagram.

This subject-mounted, battery-powered, wireless headstage transmits neural signal data to your acquisition system or computer, setting your research free of restrictive tethers. Designed for exceptional performance, FreeLynx does not require the use of a faraday cage. Just secure it to your animal interface, connect the Cheetah acquisition computer, and start recording data. Very flat frequency response accurately records both low-frequency Alpha / Theta oscillations and high-frequency Single Unit Action Potentials.

FreeLynx is an incredibly configurable system, allowing inputs from small animal tetrode drives such as our Halo Microdrives, implantable headstages, or advanced silicon probes at one or multiple implant sites. Neural signals may be digitized by FreeLynx or by separate multiplexing headstages. Our battery sizes further optimize the system for desired weight and recording duration.

Wireless Distance 10 meters
Max Channels 256, in increments of 32
Resolution 16 bit
Sample Rates 30 kHz per channel
Frequency Range 0.1 to 8000 Hz per electrode
Input Range +/-5 mV
Noise < 2.5 μV RMS (input referred)
Motion Tracking Dual 9-axis accelerometer

Quickly Adapt to Animal Interfaces

Using a separate, customizable front end input module, FreeLynx quickly adapts to your animal interface. With our custom LVDS tethers, FreeLynx is compatible with most major silicon probes, making FreeLynx ideal for non-standard animal models and complex behavior studies. Our customizable front end also quickly adapts FreeLynx to varying channel counts, multiple implant sites, and flexible mounting options.

Example Configurations

Configurable Front End Improves Compatibility

Exceptional Telemetry for Larger Animal Models

Engineered especially for high-density, high fidelity acquisition, FreeLynx opens the door to outstanding neural data quality and quantity from each untethered subject and is especially well-suited for neural recordings using models of 400 grams body weight and larger.

  • Strong wireless signal transmission range allows large arena for natural behaviors and performance nearly indistinguishable from wired systems.
  • Animal- and experiment-specific enclosure options protect device and implant sites for long-duration studies.
  • Compatibility with advanced neural probes for precise and multi-targeting of brain regions.

“Our lab has experimented with a number of wireless data acquisition systems for both rodent and primate electrophysiology. We are very pleased with the recording quality and overall performance of Neuralynx’s [FreeLynx] - which we find to be virtually indistinguishable from traditional wired systems. We would happily recommend this device for any researcher seeking a reliable and user friendly system for performing wireless electrophysiology recording.”

Carol A. Barnes, Ph.D. Director, ARL Division of Neural Systems, Memory and Aging, University of Arizona

Bracket-mounted FreeLynx with for 256 channels

Surprisingly Small & Light for Rat Models

At 30 x 35 x 30 millimeters, 11.5 grams, the FreeLynx is very powerful for its size.

  • FreeLynx: 11.5 grams
  • Small battery: 6.8 grams
  • 64-channel AFE: 3 grams
  • Total: 21.3 grams
  • QuickClip® to Halo Microdrives - low-profile for reduced head torque
  • Or connect to Mini-Amp-64 (Cambridge NeuroTech) implantable headstage
  • Backpack options further reduce felt weight by relocating battery & FreeLynx to animal's center of mass

US penny coin: 19mm diameter

Flexible Recording Modes

1. A Stand-Alone Acquisition System

FreeLynx is capable of connecting and transmitting neural data up to 256 channels directly to a Cheetah acquisition computer. Multiple Cheetah / FreeLynx systems allow simultaneous time-synchronized telemetry recordings.

  • Reduced cost for startup labs
  • Up to 256 channels per FreeLynx / Cheetah system

2. Combine with the Digital Lynx SX

For Digital Lynx SX labs, FreeLynx brings additional advanced electrophysiology capabilities.

  • Simultaneous wired & wireless recording
  • Record from 1 or 2 FreeLynx simultaneously, up to 128 channels each
  • Process and respond to signals in real-time with HPP closed loop technology
3. On-board MicroSD Memory

Switch FreeLynx to a high-performance neural data logger at any time during experiment by recording to a tiny on-board MicroSD card (~0.5 grams). Storage capacity allows continuous, high-density neural recording for 24+ hours depending on battery capacity.

  • Remotely switch between telemetric and on-board MicroSD recording at any time during experiment
  • Improves battery life to increase recording duration

FreeLynx Recording Options

Accessories to Suit Your Research

FreeLynx Remote Power Control Set

Infrared (IR) receiver and transmitter pair for remote power control to turn FreeLynx on/off - ideal for sleep studies.

FreeLynx Power Tether

Allows continued use of FreeLynx for recording setup without use of battery.

FreeLynx Power Stick

Turns FreeLynx “On/Off” via magnetic control switch.

FreeLynx USB Charging Hub

40W/8A 5-Port USB charger.

FreeLynx Battery

FreeLynx batteries are rechargeable and may be quickly swapped.

  • Small: 240 mAh, 6.8 grams, approx. 0.5 hours

  • Medium: 650 mAh, 15 grams, approx. 1.5 hours

  • Large: 1300 mAh, 30 grams, approx. 3 hours

  • Custom battery options available for longer experiments.

FreeLynx Charger

Conveniently charges FreeLynx batteries, indicating charging status via colored LED’s.

FreeLynx Shield

~ 3 grams. Optional, but highly recommended for protection and optimal battery life.

FreeLynx Mounting Bracket

Optional 90-degree mounting bracket, replaces shield.

FreeLynx EIB-72-QC Large

Provides microwire connections to FreeLynx with QuickClip® connectors.

Uses large EIB pins. Mounts directly on Halo-18 Microdrives. Mounting tabs allow for a more secure connection between the EIB and FreeLynx.

FreeLynx EIB-72-QC Small

Provides microwire connections to FreeLynx with QuickClip® connectors.

Uses small EIB pins. Mounts directly on Halo-18 Microdrives. Mounting tabs allow for a more secure connection between the EIB and FreeLynx.

FreeLynx LEDs

Omni-directional LEDs for tracking subject’s head location and direction.

FreeLynx Training Weight

Used to train subjects prior to running experiments with FreeLynx system. This is a FreeLynx mass model, representing approximate size, weight and balance of FreeLynx.

FreeLynx Signal Mouse

Simulates a live subject by sending an individual signal to all headstage channels for testing purposes.

FreeLynx Protective Cover

Prevents NHP subjects from accessing or damaging FreeLynx. “On/Off” switch may be toggled using FreeLynx Power Stick while FreeLynx Protective Cover is in place. Customized for specific application.

FreeLynx 256 Channel 4 Port LVDS Bridge Board

Adapts FreeLynx to most major neural probes. Connects up to four LVDS tethers with four 30-position Molex input connectors.

FreeLynx PZN-12 LVDS Tether

Connects FreeLynx wireless acquisition system to animal interfaces using Polarized Nano (PZN-12) connection such as Cambridge NeuroTech Mini-Amp-64. Custom lengths available for your application.

FreeLynx LVDS tether

Connects Freelynx wireless acquisition system to 32 or 64 channel silicon probes: Cambridge NeuroTech® (ASSY-116, ASSY-156, ASSY-158), NeuroNexus® (CM/OCM/H/HC/P series), ATLAS Neuro® (Omnetics 32-Chronic).

QuickClip 72 to Dual Omnetics Adapter

Connects a HS-72-QC headstage or 64-channel FreeLynx to compatible 3rd party animal interfaces (Omnetics 36).

​This adapter features a magnetically-aligned QuickClip® connection to a HS-72-QC headstage or the Analog Front End (AFE) of a FreeLynxTM wireless telemetry device. The reverse side features two Omnetics 36 socket connectors for compatible probes and other animal interfaces.

For use with 32 and 64 channel ATLAS Neuroengineering (Omnetics 32-Chronic), Cambridge NeuroTech (ASSY-116, ASSY-158) and NeuroNexus® (CM/OCM/H/HC/P series) probes. This adapter can also convert Plexon®, Tucker-Davis®, and Blackrock Microsystems® interfaces to be used with the HS-72-QC and Freelynx 64 channel.