Essentials: The Biology of Aggression, Mating & Arousal | Dr. David Anderson

Andrew Huberman

Apr 9, 2026

Episode description

In this Huberman Lab Essentials episode, my guest is Dr. David Anderson, PhD, a professor of biology at the California Institute of Technology (Caltech) and an investigator at the Howard Hughes Medical Institute (HHMI). We discuss the brain circuits that underlie how emotions emerge and shape behaviors, including the neural control of fear, aggression and pain. We also explore how hormones and neuromodulators influence these emotional states, and why understanding these hidden internal processes is essential for improving future mental health treatments.

Show notes: https://go.hubermanlab.com/blBjp0e

Watch more Huberman Lab Essentials: https://youtube.com/playlist?list=PLPNW_gerXa4OGNy1yE-W9IX-tPu-tJa7S&si=a1_sA7rUT-fE0OM5

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Dr. David Anderson
Caltech academic profile: https://davidandersonlab.caltech.edu/people/professor-david-j-anderson
The Nature of the Beast (book): https://amzn.to/3qsrdOH
Lab website: https://davidandersonlab.caltech.edu
Publications: https://scholar.google.com/citations?user=C88XVPQAAAAJ

Timestamps
00:00:00 David Anderson
00:00:20 Emotions vs States
00:01:53 Emotion Qualities: Persistence & Generalization
00:04:04 Aggression
00:06:39 Evolution of Fear & Aggression, Offensive vs Defensive Aggression
00:08:55 Homeostatic Behaviors & Hydraulic Pressure
00:11:56 Testosterone, Estrogen & Aggression
00:13:49 Female vs Male Aggression
00:15:46 Mating Behavior & Aggression; Sexual Violence
00:19:21 Periaqueductal Gray, Pain Control & Fighting
00:23:36 Tachykinin, Pain, Social Isolation & Aggression
00:28:08 Emotions & Somatic Feeling; Vagus Nerve
00:32:48 Acknowledgements & Future Direction

Disclaimer & Disclosures: https://www.hubermanlab.com/disclaimer

Mindsip insights from this episode:

Understand emotion as a neurobiological state influencing behavior

Emotion is a neurobiological state that controls behavior, with the subjective feeling being just the 'tip of the iceberg' below the surface.

#emotion

#neurology

Activate mating neurons to shift aggression to affection

Activating specific 'mating neurons' can cause a male mouse to immediately stop fighting another male and instead attempt to mate with it.

#emotion

#neurology

Understand context-dependent female aggression in mice

Unlike males, female mice only become highly aggressive when nursing their pups, and they possess unique mating-related neurons not found in the male brain.

#brain

#women

Reverse isolation-induced aggression with Osanoton drug

A drug called Osanoton, which blocks the tachykinin receptor, can completely reverse the aggression and fear caused by chronic social isolation in mice.

#mental-health

Address social isolation to reduce aggression and fear

Social isolation causes a massive upregulation of a brain peptide called tachykinin, which is directly responsible for increased aggressiveness and fear.

#emotion

#relationships

Understand fear-induced analgesia to manage pain perception

The well-known phenomenon of 'fear-induced analgesia' explains why injuries sustained during a fight often don't hurt until after the event is over.

#fear

#pain

Utilize fear to halt aggression in conflict situations

Stimulating fear neurons can stop a fight dead in its tracks, suggesting that hierarchically, fear is a more dominant state than offensive aggression.

#emotion

#fear

Utilize estrogen to enhance male aggression response

Many effects of testosterone on male aggression are mediated by its conversion to estrogen in the brain, and an estrogen implant alone can restore fighting ability.