In which episode of the Huberman Lab does Andrew says things like "The nervous system work with reflexive actions and deliberatly actions. It wants to get most things reflexive", and "Acetylcholine is the molecule that highlights whatever happens during that period of heightened alertness"; and gives the example of a bel being listened during a learning bout.

The quotes you're asking about are from the episode titled "How Your Nervous System Works & Changes" on the Huberman Lab. In this episode, Andrew Huberman explains the roles of reflexive and deliberate actions in the nervous system, emphasizing that the system aims to automate as many actions as possible. He also discusses how acetylcholine highlights significant events during periods of heightened alertness, using the example of a bell during a learning session.

For your reference, here are the relevant clips from that episode:

1. Discussing reflexive and deliberate actions:

   "The nervous system wants to pass off as much as it can to reflexive action... If reflexive action tends to be what we call bottom up deliberate action..." 1.

2. On acetylcholine and learning:

   "Acetylcholine is the molecule that highlights whatever happens during that period of heightened alertness." 1.

You can listen to the full episode for deeper insights into these concepts.