Neurologger 1

The first generation of Neurologgers is designed for large animals.


8 differential neurophysiological channels (EEG, ECG, EOG, EMG)
three of which can be used for 3-D accelerometer
5.31 g recorder weight + ~9 g typical battery
Total weight about 15 g without enclosure

Micro SD up to 32 GB

Connector for electrophysiological signals


Recent research:

Neurologger revealed peculiarities of REM sleep and slow wave sleep asymmetry
in swimming fur seals!

See Kendall-Bar et al., 2019 and Lyamin et al., 2018 for more information

Usage example: Neurologger recorded sleep in a walrus in Russia!

See Lyamin et al., 2012 for more details



Previous study: Neurologgers on ostriches in Africa!

See Lesku et al., 2011 for more details

The version of the Neurologger used in Africa (Lesku et al., 2011) has improved parameters comparatively to the previously published (Vyssotski et al., 2006).

The device can have from 4 to 32 GB of storing memory. Adaptation to a larger memory (64, 128, 256 GB, etc.) is possible. Simultaneously the device became approximately two times shorter. This became possible due to exploiting of the microSDHC card instead of the standard SD card used before.

The modification of the logger used on ostriches was equipped with a three-dimensional accelerometer, sampled with the same rate as EEG channels. This version of the logger also can be used just as a 3-D storing accelerometer, if EEG channels are not needed.

The power consumption of this modification is approximately 40% smaller against the original version.

Neurologger also can be used for storing data from the external equipment sent through the serial port. It recorded circadian activity of mice in the field (Daan et al., 2011) and high-resolution trajectory of wandering albatrosses (Sachs et al., 2012).

32 GB version of the Neurologger

Larger memory - by request!
The first version of the Neurologger (Vyssotski et al., 2006)


Technical data of the Neurologger (the first original version)

Number of channels:

8 differential

ADC resolution:

10 bit

Input range:

+/- 500 µV

Neurologger mechanical dimensions:

59x36x4 mm 3

Total mechanical dimensions (Neurologger, battery):

66x36x10 mm 3

EEG logger weight without battery and preamplification head:

7 g

Preamplification head weight (with cable): 2 g
Weight 560mAh battery: 13 g

Total weight:

22 g

Battery life time:

EEG logger, 8 channels, 125, 250 or 500sps

2 days 5 h

Single unit logger, 2ch x 10ksps

22 h 20 min

1GB SD card data filling time:


8 channels, 125sps

7 days 20 h

8 channels, 250sps 3 days 22 h

8 channels, 500sps

1 day 23 h

2 channels, 10ksps

9 h 24 min

1GB data downloading time: Through serial interface 2 h
Through MMC/SD reader 20 min


3 RS232 (3.3V level), 1.5Mbps, converted to USB via DLP-USB232M; 2 GPIO: for synchronization and for Status LED, power supply

Data format:




Neurologger is a registered trademark.
Protected by U.S. patents #8,160,688; #9,492,085; #11,134,864. Other patents pending.