Detail of ultra dense recording sites (9x9 μm with a 11 μm pitch) on silicon probe

Detail of ultra dense recording sites (9x9 μm with a 11 μm pitch) on silicon probe

Close-up of a 1020-channel silicon probe to be packaged onto a PCB breakout (completed version below)

Close-up of a 1020-channel silicon probe to be packaged onto a PCB breakout (completed version below)

No adequate commercial systems existed to record from the probe’s 1,000 channels.
 


Willow is the first product developed from the collaboration of LeafLabs and SNG: the 1024-channel datanode is designed to be modular, one tenth the cost per channel of existing systems, and scalable.

The datanode contains an FPGA that processes 1024 channels of electrophysiological data by communicating concurrently with as many as 32 industry-standard neural amplifier chips. The raw, wide-band data is written directly to a storage drive by the FPGA, while simultaneously being forwarded to a computer for real-time feedback and monitoring by the user. 

 

Reduced per-channel cost by an order of magnitude compared to what had been commercially available.
 

Willow system showing probes, headstages, and data acquisition module  

Willow system showing probes, headstages, and data acquisition module
 

Visualization of a 2 second capture that preserves the geometric layout of the recording sites on the probe (here four rows and two columns). The amplitude of neural activity varies across the recording sites and reveals the spatial localization of the neuronal signal sources.  

Visualization of a 2 second capture that preserves the geometric layout of the recording sites on the probe (here four rows and two columns). The amplitude of neural activity varies across the recording sites and reveals the spatial localization of the neuronal signal sources.

 

Streaming 32 channels allows online visualization of neural data.

Streaming 32 channels allows online visualization of neural data.