PlexBright Compatible Commutators

In experiments requiring optical stimulation of freely behaving animals, optical patch cables attached to the animal may become twisted as the animal moves around. In some cases, during short stimulation sessions, this cable twisting may be tolerated. In other cases where extended free movement of the animal is important, a solution to prevent tangling is required. The PlexBright Commutators below offer a unique solution for preventing the tangling of cables.

Plexon offers several PlexBright compatible commutators to support various research requirements:

  • PlexBright Dual LED Commutator
  • PlexBright Dual LED + 16 Channel Commutator
  • Carousel Commutator
  • NEW Motorized Carousel Commutator
  • NEW PlexBright Dual LED + Fluid Swivel Commutator

PlexBright Dual LED Commutator

The PlexBright Dual LED Commutator is ideal for experiments in which the only tethered cables are as a result of the optogenetic stimulation.  It has a light-weight, low-torque, passive design that supports optogenetic experiments requiring one or two LEDs with animals as small as mice.  Further, it is equipped with magnetic LED module attachment bases for faster interchangability - often valuable once the commutator has been fixed in place in a small enclosure.

 

PlexBright Dual LED + 16 Channel Commutator

Another design includes the mixed-mode PlexBright Dual LED + 16 Channel Commutator.  It is ideal for experiments in which optogenetic stimulation is performed simultaneously with neural recording using analog headstages.  It, too, has a light-weight, low-torque, passive design that supports optogenetic experiments requiring one or two LEDs with animals as small as mice. This innovative device uniquely incorporates 21 lines supporting up to 16 channels of neural data transmission.

This is the commutator to choose if combining optogentics with a low channel count:

  • OmniPlex® D System utilizing either a DigiAmp™ or MiniDigi™ Digitizing Amplifier,
  • OmniPlex System utilizing an analog amplifier, or even
  • The original MAP system

 

Carousel Commutator

The newly launched mixed-mode Carousel Commutator is the most recent addition to the rapidly growing PlexBright Optogenetic Stimulation System product line.  Like the others, It has a light-weight, low-torque, passive design that supports optogenetic experiments requiring one or two LEDs with animals as small as mice.  It is also ideal for experiments in which optogenetic stimulation is performed simultaneously with neural recording - only using digital headstages.

Differently than the previous options, this commutator can accomodate up to two digital headstages, yielding up to 64 channels of neural recording with any combination of 16 or 32 channel digital headstages.

This is the commutator to choose if using combining optogentics with a:

  • ·         OmniPlex® D System utilizing Digital Headstage Processor (DHP)lex® D System utilizing Digital Headstage Processor (DHP)

NEW PlexBright Motorized Carousel Commutator

The newly launched PlexBright Motorized Carousel Commutator is the most recent addition to the rapidly growing PlexBright Optogenetic Stimulation System product line. This commutator is ideal for experiments in which optogenetic stimulation is performed simultaneously with neural recording using digital headstages. It can be used with up to four digitizing headstages and two Plexon compact LED modules. There is also as a hole down the center of the commutator which can be used for fluid delivery or an optical swivel.

This is the commutator to choose if using combining optogentics with a:

  • OmniPlex® D System utilizing Digital Headstage Processor (DHP)

 

NEW PlexBright Dual LED + Fluid Swivel Commutator

The PlexBright Dual LED + Fluid Swivel is also ideal for experiments in which optogenetic stimulation is performed simultaneously with drug perfusion. It is designed to be used with the PlexBright Head-Mounted LEDs. It also has a removable torque arm that can be used to help transfer torque from the animal to the commutator. 

  • Perform simultaneous optic stimulation and intravenous drug delivery, or perfusate delivery for microdialysis or voltammetry

  • Compatible with up to two of our new high-power Head-Mounted LEDs and our PlexBright LD-1 and 4 Channel Optogenetic Controllers

 

 

 

 

 

Seventeen specialized PlexBright Compact LED Modules have been engineered for use with either commutator that mirror wavelengths available in Plexon’s PlexBright Table-top LED Modules. All PlexBright Commutators support the use of either one or two compact, super-intensity PlexBright LED Modules. When operating two compact modules simultaneously, they may be driven independently or share the same signal, such as for bilateral stimulation via the specialized PlexBright Series-Y BNC cable (pictured attached to the PlexBright Dual LED Commutator with blue, PlexBright Compact LED Modules above).

Historically, an earlier method of delivering light to behaving animals has been to use a laser to transmit light through a rotating set of lenses termed a fiber optic rotary joint (FORJ). The laser/FORJ combination is costly and subject to limitations in channel counts and output stability. Plexon’s commutators, based on our LED platform, are far more cost effective and provide an efficient and superior alternative in which stable, high-intensity light may be delivered with high temporal precision for even the most demanding optogenetic experiments.

PlexBright Starter Kits offer the initial products to get started and a 10% discount when purchased as a kit. Kits are available in four experimental designs and with either driver – the LD-1 Single Channel LED Driver (economical kit), or our more sophisticated device, the 4 Channel Controller with Radiant™ Software (fully functional kit). Starter Kit details are available on the PlexBright Quote Request Forms.

PlexBright Quote Request Forms (also specific to the experimental set-up) include the Starter Kit itemization and individual parts for selection. The forms are available on the Resources tab, or on the Documentation page under the PlexBright header.

If your experiments include freely behaving animals, you may also be interested in learning more about the CinePlex® and CineLAB® Behavioral Research Systems.

If you have further questions, a Plexon Sales Engineer will be happy to help.