It is a pleasure to welcome the author of The Hidden Spring: A Journey to the Source of Consciousness, Mark Solms.

In this episode, we will discuss questions such as where does arousal come from anatomically and how does it arise physiologically? And the central question of today is where the seemingly magical shift from automatic reflex to volitional feeling occurs. Today, we will share some terms like synaptic transmission, reuptake, post-synaptic modulation and the role of neurotransmitters and neuromodulators, and we will also explain the role of the PAG, the periaqueductal grey.