Electrode & Clinical Interfaces

Research on the same electrodes, alongside the clinical system

Today: patient electrodes connect to the JE-125A mini junction box, which is cabled to the JE-120A amplifier and the room-mounted Nihon Kohden system. With Ripple: the Ripple adapter is affixed to the JE-125A mini junction box, between the box and the cable to the JE-120A. Macro front ends mount on the adapter and digitize there, so no analog cabling is added and noise stays low. The clinical system keeps every channel. Microwires connect to the Summit directly. CLINICAL SYSTEM ADDED BY RIPPLE RIPPLE RESEARCH-ONLY MICROELECTRODES Nihon Kohdenclinical system Room-mounted JE-120A amplifier JE-125A minijunction box Patient electrodes Macro contacts and microwires Ripple Nihon Kohdenadapter Affixed to the junction box Macro front ends On the adapter, digitize there Explorer Summit Recording and stimulation Research computer Trellis and APIs Micro-macrointerface Ad-Tech · DIXI · PMT Micro2 / Micro3front ends Microwires, at the patient
Existing clinical setup Added by Ripple With Ripple: the Ripple adapter is affixed to the JE-125A mini junction box, between the box and the cable to the JE-120A. Macro front ends mount on the adapter and digitize there, so no analog cabling is added and noise stays low. The clinical system keeps every channel. Microwires connect to the Summit directly.

Parallel interfaces for clinical monitoring systems

Clinical adapters tee off the existing clinical hardware, so Ripple can record and stimulate on the same electrode contacts in parallel while the clinical system keeps monitoring.

  • Compatible with Nihon Kohden, Natus and Cadwell systems
  • 256+ channels in parallel with the clinical system, and up to 512 in total
  • Macro or Macro2+stim front ends mount directly on the adapter
  • Front ends digitize at the adapter, so no analog cabling is added and noise stays low
  • The clinical setup and workflow stay as they are
  • Quick to connect and disconnect

Front ends: Macro / Macro2+stim →

Natus clinical adapter with two Macro2+stim front ends
Natus adapter
Nihon Kohden clinical adapter, channels 1–32, with its electrode connector
Nihon Kohden adapter

Touchproof adapter

For electrodes and leads with standard touchproof connectors. The adapter has 32 touchproof inputs, plus reference (R) and ground (G).

  • 32 single-ended channels with a Macro front end
  • 16 differential pairs, marked +1− to +16−, with a PhysioD front end

Front ends: Macro / Macro2+stim → · PhysioD →

Explorer touchproof adapter: 32 touchproof inputs labelled 1 to 32, paired as differential inputs +1− to +16−, with reference and ground inputs
Explorer touchproof adapter

Interfaces for micro-macro depth electrodes

Micro2 and Micro3 interfaces record from the micro contacts of micro-macro depth electrodes, for single-unit recording alongside the macro contacts. The Micro2 interface is in use today; the next-generation Micro3, shown here as a prototype, adds further features.

Micro2 and Micro3

  • Single-unit recording from the microwires
  • Digitizes in the headwrap
  • Stimulation on any or all channels
  • Flexible stimulation: arbitrary waveforms and independent current drivers

Micro3 adds

  • A separate reference per electrode (or bank of 8 channels)
  • Grounding of unused channels, set in software and done in the hardware

Works with

  • Ad-TechBehnke-Fried
  • PMTMicroburst
  • DIXI MedicalMicro-Macro Depth Electrodes

Front ends: Micro2 / Micro2+stim → · Micro3 / Micro3+stim →

Micro2 interface for Behnke-Fried electrodes, with four electrode connectors
Micro2 interface · in use today
Micro3 interface for Behnke-Fried depth electrodes, about the size of the Micro2's box, showing the electrode contacts under a clear cover
Micro3 interface · prototype

Shown to approximate relative scale

Utah array pedestal interfaces

Connect directly at the pedestal of implanted Utah arrays, with Micro2+stim front ends for simultaneous recording and stimulation.

  • Connects directly to the array pedestal
  • 128-channel pedestals supported today; 256-channel coming soon
  • Micro2+stim front ends for recording and stimulation
  • Wearable, for sessions away from the lab bench

Front end: Micro2 / Micro2+stim →

Illustration of a participant in a wheelchair with a pedestal interface on the head connected to a Summit on the lap
Utah array pedestal interface held in a hand, with its cable

Custom electrode adapters

Using a different electrode or connector? We develop adapters for the electrode technology used in your study.

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