The basis of senses: ion channels, action potential, olfaction and magnetic fields

To know more about sensation in humans and in animals, I met with Prof. Dr. Hervé Cadiou and we talked about many crucial things, disproving some myths on the way.
In this episode, we describe the biological principle of sense. We explain which role ion channels play in this process, what is action potential and how the brain specialises in senses in different animals.
Prof. Cadiou talks about smells, pheromones and behaviour.
Also, we discuss the role of magnetic fields and magnetosensation. Is it the sixth sense or not? You will learn from this episode.
Enjoy! Thanks for watching!

Also, if you want to find and observe magnetotactic bacteria, here is the link to the protocol of the experiment:
https://docs.google.com/document/d/1SviOXWzDfF5g5osNZsqNkgVUZworSBG7/edit?usp=drive_link&ouid=111537452390066100032&rtpof=true&sd=true

If you want to go deeper into the topics of the episode, I recommend you to read the papers:
about magnetosensation (Treiber et al, 2012);
about olfaction (Whitlock and Fernanda Palominos, 2022)

Timestamps:
00:00 Intro
01:33 Introducing Professor Cadiou
04:10 Ion channels
08:02 The neurochemistry of smell
16:16 Do humans have pheromones?
27:02 Road to magnetosensation
40:47 Magnetobacteria
43:36 Magnetosensation and navigation in birds
49:38 The invisible sense
53:21 Magnetosensation in astronauts
1:03:50 Magnetic fields pollution