How can we help you?
What sampling rates do you offer?
Sampling rates of analog data are 250 Hz or 500 Hz, depending on your preference.
What is Zeto’s recording reference?
Users can choose to record Zeto EEG data against a Cz or external reference. External references are provided via a drop-down cable. Common locations to place external references are the mastoids, the earlobes, or the nose.
How much does the headset weigh?
Less than 650 g (23 oz).
Is your headset able to receive transistor-transistor-logic (TTL) triggers?
Yes. We accept TTL triggers (8-bit input) and send TTL triggers (8-bit output) via a wireless interface. Timing precision is within one sampling point or +/- 2 ms.
Do you have the ability to stream data through lab stream layer (LSL) outlets?
Yes. Users can stream Zeto data via lab streaming layer (LSL). See https://labstreaminglayer.readthedocs.io/info/intro.html
What is the average file size for a study with and without video?
The average size is 200MB for a 1-hour EEG, depending on your sampling rate (250 Hz versus 500 Hz). Additional storage will be required when video is stored simultaneously. The storage space needed for video depends on the video recording resolution.
How long does it take to charge?
It takes approximately 2.5 hours to charge from 0% to 100%.
How do the dry electrodes work?
Integrated preamplifiers at the recording sites increase the signal-to-noise ratio to such a degree that skin impedance up to 1,000 kOhm will still produce a viable EEG. As a result, no skin preparations, gels, pastes, or adhesive glues are required.
Zeto headset uses active electrode technology; that is, it amplifies and boosts the signal right above the electrode. Therefore, our system can handle impedances above 100 mOhm. Our real-time signal quality indicator presents a continuous picture of the electrode contact with the skin plus external interference that may affect a particular electrode, which gives a more complete picture than just electrode impedance at the start of the recording. A prominent color change allows users to decide if they wish to intervene or wait for signals to calm down.