Electronics for Neuroscience


RatLog128 is a modular logger system consisting of a processor board and one, two or four headstage amplifier boards. They can have 16, 32, 64 or 128 channels. The headstage amplifier boards can either be connected to the processor with an ultra-flexible short cable or they can be plugged directly into the processor. Most headstages can be stacked, that is, connected to another headstage to provide multiples of 32 channels. A 9-axis motion sensor is included.

RatLog-128 with examples of headstages


RatLog-128 with four stacked headstages
  • Neural recording
    • 16, 32, 64 or 128 channels each sampled at 32000 Hz
    • 16-bit ADC
    • 10mV p-p signal range with 0.2µV resolution
    • Adjustable analog low-pass and high-pass filters
    • Low noise 2.4µV rms with 7kHz bandwidth
    • Wired data streaming option for 32 channels (for some headstages)
    • 8-35 possible reference channels per headstage (depending on the headstage)
    • Connectors depend on the headstage (Omnetics, Molex, Mill-max, Hirose)
    • Recording times with 3g battery: 3.3 hours for 32 channels, 2 hours for 64 channels, 3 hours for 128 channels with a 6g battery
  • Motion sensor
    • 3-Axis accelerometer
    • 3-Axis gyroscope
    • 3-Axis magnetometer (compass)
  • Small size and weight
    • Board: 15x22mm, 1.92g
    • Headstage: 13x13mm (standard wired) or 15x27mm (standard stacked), 1.5g per headstage
RatLog-128 with two 16-channel headstages connected with flex wire
  • Configurations
    • More than 10 different headstages available
    • Headstages can be connected with flex wires or in the stacked configuration
    • Can be vertical or horizontally mounted
    • A variety of connector options (Omnetics, Molex, Mill-Max, Hirose), adaptors available