Key features

AlphaComm-A is a motorized commutator that senses and tracks rotations induced in the tethers connected to an animal in a free moving set up. This ensures that the tethers are free of entanglement while the animal moves in the arena.
The slip-ring commutator is a user-friendly & state of the art motorized commutator solution that supports both neural recording and stimulation (optical and electrical) and seamlessly interfaces with the AlphaLab SnR. AlphaComm commutator ensures an ultra-quiet environment for recording due to superior electrical shielding. The system background noise for the entire set up with the commutator, preamps and Headstage is 2uV RMS. The Headstage cable is ultra-flexible and lightweight to give more freedom to the moving animal and efficiently transfer torque to the commutator’s sensor. AlphaComm is powered by a Lithium-ion battery that lasts at least 6 hours on one charge. It charges by DC 5V power. No computer interface is required for operation.

THE MOTORIZED COMMUTATOR IS IDEAL FOR

  • Free moving rodentsLong session experiments
  • Recording and stimulation (electrical/optical)
  • advanced electrophysiology setups 
  • with external connections (liquid tubes/sensors)  

 

Specifications

Free Moving setup Preamp Headstage

Gain

1

10

Dynamic Input Range

±62.5 mV

±6.2mV

Amplifiers Input

Single ended, 1 analog reference channel

Hardware high pass filter (HPF)

DC

0.5Hz

Hardware low pass filter (LPF)

10kHzs

Sampling rate

Measure, calculate and report for all electrodes

A/D duration

16 - bit

Bit Resolution

1.9 µV

0.19 µV

Input Referred Noise (RMS)

2 µV @ reference, 5 µV @ 500 KΩ reference

Impedance check

Measure, calculate and report for all electrodes

Physiological Signal Types

Spikes, LFP, EEG, EMG and other   

Stimulation

Recording only

Optional stimulation for all gain options, up to 4 channels out of each 16 channels module dedicated current sources module

Preamplifier cable length

Standard is 70cm, can be customizable up to 2 meters

 

FEATURES AND BENEFITS OF THE MOTORIZED COMMUTATOR

  • Supports 8-64 channels
  • High-resolution sensing 
  • Ability to control speed and sensitivity
  • Compatible with optogenetics (up to 4 fibers)  & liquid tubes
  • Allows electrical stimulation up to 16 channels
  • Compatible with a variety of arena sizes and  shapes
  • Allows Impedance check
  • Simple and stable mounting mechanism
  • Ergonomic design and ports layout