Click any moment to jump to that point in the video
Huberman discusses how traumatic brain injury can lead to olfactory dysfunction because olfactory neurons extend wires into the skull through the cribriform plate, which can be damaged during a head injury. He explains that the recovery of the sense of smell can be an indicator of recovery from a concussion. This clip is valuable for understanding the connection between head injuries and the sense of smell, as well as the potential for using olfactory function as a gauge for recovery.
Huberman explains the science behind the Coolidge effect, a pheromonal response in animals where the introduction of a new mate restores sexual vigor. He also discusses the evidence for and against pheromonal effects in humans, including the synchronization of menstrual cycles and chemical signaling through tears.
Huberman explains how olfactory neurons are unique because they are constantly replenished throughout life, unlike other neurons in the cortex, retina, or cerebellum. He notes that the ability to smell and taste is a strong indicator of brain health and that exercise and social interactions can increase olfactory neuron neurogenesis. This clip is valuable for understanding the dynamic nature of olfactory neurons and their importance for brain health.
Huberman discusses the science behind human chemical signaling, detailing how we subconsciously evaluate others through skin-to-skin contact and breath. He highlights a study showing how people touch their eyes after shaking hands, transferring chemicals to mucosal membranes for evaluation. This is a valuable clip for understanding the subtle ways we assess potential partners and social connections.
Huberman provides a practical tool for enhancing brain health and sensory function by consciously practicing and enhancing the sense of smell. He suggests a simple exercise of smelling an orange and doing 10-15 inhales and exhales through the nose. This clip is valuable because it offers a tangible way to improve olfactory perception and overall brain function.
Huberman explains the fascinating science behind how we detect chemicals through smell and taste, including how our brains process odors and the connection between smell and memory. He touches on the controversial topic of pheromones and how humans communicate chemically.
Huberman discusses a study showing that olfactory training can help create new neurons after a head injury. He also explains how peppermint and minty scents can increase attention and arousal, similar to smelling salts, but warns against using ammonia improperly due to potential damage.
Huberman discusses how nasal breathing enhances learning and focus due to the connection between inhalation and brain activity. He explains how the act of smelling, or sniffing, wakes up the brain, improving alertness and memory. This clip is valuable for anyone looking to optimize their cognitive function through simple breathing techniques.
Huberman shares a fascinating study about how men's testosterone levels and sexual arousal are affected by smelling women's tears. This highlights the powerful, often unappreciated role of chemical signals in human biology and communication.
Huberman debunks the myth of the tongue map, explaining that taste receptors are intermixed all over the tongue. He explains each of the five taste modalities, sweet, salty, bitter, umami, and sour, and what each one signals for in terms of energy, electrolytes, potential poisons, amino acids, and spoiled food.