Capturing EEG of a cow with the Unicorn BCI Core-8

What if we could listen to the brain activity of a cow while she calmly chews hay or strolls around her barn? Until recently, this was more imagination than reality. Today, with lightweight brain-computer interface (BCI) technology, recording EEG of a cow is becoming part of veterinary research.

Our test with Rosa, a dairy cow, showed just how practical this can be. Outfitted with the Unicorn BCI Core-8, mounted securely on her halter and connected to electrodes on her head, Rosa continued her normal routine—yet we were able to record EEG of a cow in real time. With the OSCAR LIVE add-on running in the background, unwanted motion artifacts were stripped away instantly, leaving us with remarkably clean EEG data.

Why Look at EEG in Cows?

Cows may not be the first animals you think of in neuroscience, but their brain signals tell us a lot that matters in both science and farming. Here are some examples:

• Welfare Insights: EEG patterns can reveal whether a cow is relaxed, stressed, or in discomfort, helping refine welfare standards.
• Safer Veterinary Care: During procedures, EEG monitoring can track the effects of anesthesia and guide recovery.
• Neurological Health: Detecting abnormal rhythms can support early diagnosis of seizures or brain disorders.
• Learning and Perception: Cows are surprisingly intelligent. Recording their brainwaves can help us understand how they process their environment.
• Bridging to Human Research: As large mammals, cows can also support translational studies relevant to human medicine.

Because EEG is non-invasive and mobile, it works in places where heavy imaging machines or invasive methods would never fit—in barns, pastures, or even during natural interactions with the herd.

How the Unicorn BCI Core-8 Made It Possible

The Unicorn BCI Core-8 is designed for high-quality EEG outside the lab, and it proved itself with Rosa.

• Light and Wearable: At just 23 g, it didn’t bother her at all when mounted on her halter.
Wireless Recording: Bluetooth 5 kept data streaming smoothly while Rosa moved freely.
• Flexible Electrodes: Gold cup electrodes worked through her fur to capture strong signals.
• Clean Data in Motion: The OSCAR LIVE add-on automatically reduced noise from walking or head movement.
• High Resolution: Its 24-bit precision delivered signals with excellent clarity.

This blend of comfort, mobility, and signal quality makes it a practical tool for recording EEG in farm animals without changing their routine.

Rosa’s First Signals

Rosa’s test highlights how EEG can now extend into environments that used to be impossible to study. Instead of confining animals to controlled labs, we can observe their brain activity while they live naturally—walking, feeding, and interacting with their surroundings.

Her case is more than just a demonstration. It shows how EEG can play a role in better welfare practices, safer veterinary medicine, and deeper insights into animal cognition. And it marks the beginning of a new era where cows like Rosa are not only farm animals but also contributors to neuroscience.

With the Unicorn BCI Core-8, the door is wide open: EEG in cows is no longer a technical challenge—it’s a working reality.