The neuro-viral blog
Attention is the metric. Here is how to keep it.
Practical, no-fluff guides on testing video before you spend, finding where videos lose viewers, and predicting performance from the brain response — not the analytics.
How to test video ads before you launch
Post-launch A/B testing burns budget to learn what a pre-launch attention test could tell you in minutes. The pre-flight workflow.
Retention scienceWhere do videos lose attention?
Retention rarely fades — it falls off a cliff at one second. The three places attention breaks, and how to find yours.
MeasurementNeuromarketing vs A/B testing
One tells you which version won, after you spend. The other tells you why, before you spend. When to use each — and why together beats either.
Frequently asked questions
What is neuro-viral?
neuro-viral predicts a viewer's second-by-second brain and attention response to a video using an AI foundation model of vision, audition and language. Paste any video and get an engagement curve and the exact moment attention drops — before you publish.
How can you predict a video's brain response without a person watching it?
The model is trained on measured human brain responses to video and learns the mapping from pixels and audio to neural activity. At inference it predicts that response for a new video directly, so no live audience, EEG, or eye-tracking is needed.
Does this replace A/B testing?
No. Prediction is a leading indicator you use before launch to diagnose the hook and the attention drop cheaply. A/B testing is a lagging, real-world confirmation after launch. Used together, prediction decides what is worth spending on and A/B testing confirms it worked.
What does "attention drop" mean?
Most videos hold attention and then fall off sharply at one specific second — a cliff. neuro-viral flags that timestamp and how deep the drop is, so you know exactly which edit will help most.
Is it free to try?
Yes. You can scan a video for free and see the predicted second-by-second attention response.
See your video on the brain
Paste any video and get a free, second-by-second attention map — before you publish.
Scan your video free