This is example of real data analysis - WAG/Rij-rat spectrogram. WAG/Rij-rat is a genetic animal model of absence epilepsy from Radboud University in Netherlands.
This repository has:
Epileptic seizures is a result of wrong electrical activity in the brain. There are many different types of epileptic seizures and seizure triggers. It's a big part of medical diagnosing.
In fact, there is no obvious sign a person has epilepsy, unless they are having a seizure, it can make diagnosing epilepsy difficult. A diagnosis is usually made after a person has had more than one epileptic seizure.
So, there is big interest of how to find, to stop epilepsy attack but more important finds the reasons of seizures. Neuroscience do this.
It's pure spectrogram
This is spectrogram with epileptic seizures. look at the spikes.
You can use Python with data package: Anaconda or Miniconda. There's another way - use Portable Python. Also you can use whatever IDE for Python.
Free