Dr. Erich Jarvis: The Neuroscience of Speech, Language & Music | Huberman Lab Podcast #87

Critical Periods

The concept of critical periods highlights the optimal times in childhood for language acquisition. Andrew Huberman and Erich Jarvis discuss how the brain undergoes significant development during these periods, making it easier to learn languages without an accent. Jarvis explains that the brain's capacity to retain information is limited, necessitating the solidification of learned circuits during these critical periods 1.

The brain is designed, I believe, to undergo this critical period and solidify the circuits with what you learned as a child.

--- Erich Jarvis

This process allows humans to maintain a certain level of plasticity, aiding in the acquisition of new languages later in life 2.

   

Language and Thought

The interaction between language and thought is a complex process that evolves as we learn new languages. Andrew Huberman explores how writing, whether by hand or typing, involves hearing the content in one's head, which connects language to thought 3. This connection is further complicated by conditions like stuttering, which Erich Jarvis links to disruptions in the basal ganglia, affecting speech coordination 4.

Stutter is complicated and in a number of ways, but culturally, and my understanding from these emails that I receive is that stutter can often cause people to hide and speak less because it can be embarrassing.

--- Andrew Huberman

Despite these challenges, therapies focusing on sensory-motor integration can help individuals manage stuttering effectively.