Matrix Array

Primate and Large Brain

Matrix Array

The Matrix Array is a high quality, high channel count, chronically implantable microelectrode array designed for primate research. Its electrode sites be customized to span any anatomical structure in a true 3D fashion (accessing both cortical layers and cortical columns simultaneously). The primate Matrix Array consists of 1) a multichannel array 2) an ultra-flexible cable/wire bundle and 3) a robust, titanium skull-mounted pedestal connector assembly. The implantation of the array is done using a low-impact, computer-controlled linear actuator to improve the quality and longevity of the implant.

This survey will help us focus future development on features that are preferred by our customers. You are asked to provide your preference (1 star is the least preferred, 9 stars is the most preferred) on 20 potential future Matrix Array designs consisting of the following attributes:

Number of channels

  • 128 channels
  • 256 channels

Integrated electronics

The Matrix Array can be designed with integrated electronics, which digitize neural signals right at the connector assembly. The benefits include 1) reducing lead count and bulkiness of the connector interface (i.e. no headstage), 2) improving signal to noise ratio, 3) impedance check. Options are:

  • Yes, disposable: Electronics are designed to be integrated as part of the assembly to minimize package footprint. The electronics components are expected to be disposed at the end of experiment.
  • Yes, reusable: Electronics are designed to be recovered and reusable for subsequent implants. The reusability comes with a potential trade-off on package size and manufacturing cost.
  • No: No onboard electronics are included. Conventional connectors are used. The implant package might be bulky. Connection forces to plug/unplug the headstage may be large and extra care will be necessary when connecting due to high pin count.

Longevity of Implant

The length of time the implant remains active and produces acceptable recording quality. Options are:

  • 3 months
  • 6 months
  • 12 months

Electrode site design

The Matrix Array can be designed with electrode sites to access multiple cortical layers, or cortical columns, or both. Options are:

  • Primarily cortical layers: Electrode sites are designed to target primarily on cortical layers.
  • Primarily cortical columns: Electrode sites are designed to target primarily on cortical columns.
  • Both cortical layers and cortical columns


Three price points (low, medium, and high) are suggested for each configuration.