Mind & Matter

Nick talks to Dr. Rusty Gage, a neurobiologist at the Salk Institute whose lab studies how genes & environment interact to influence brain development, including the process of adult neurogenesis. They discuss: what neurogenesis is and how it works; lifestyle factors that influence neurogenesis, such as exercise, intermittent fasting, etc.; molecular pathways involved in neurogenesis; depression &...

Nick talks with Nick Mosley, who is CEO of a cannabis testing lab called Confidence Analytics, which conducts analytical testing for legal cannabis products in Washington & California. They discuss: how analytical testing for cannabis products works; THC, CBD, and cannabinoid content; terpenes; pesticides, heavy metals, and microbial contaminants; the phenomenon of THC inflation & lab shopping in...

Nick talks to psychiatrist & neuroscientist Devanand Manoli, MD, PhD, whose lab at UCSF studies the neural basis of social behavior & attachment in prairie voles. As a psychiatrist, he also treats patients with childhood psychosis. They discuss: the neural basis of pair bonding, monogamy, and parental & sexual behavior; oxytocin, vasopressin, testosterone & estrogen; evolution of behavior; menopau...

Nick talks to Dr. Paul Cisek, a neuroscientist at the University of Montreal who studies sensorimotor control & decision making. They discuss: the evolution of the brain from the earliest nervous systems to humans; metabolism & state control; the evolution of behavior; sensation, perception, cognition, decision making & consciousness; language & representation; why neuroscience needs evolutionary...

Nick talks to Dr. Stephen Simpson & Dr. David Raubenheimer, both professors at the University of Sydney who have been research collaborators for many years. Their research focuses on understanding animal feeding behavior, especially how & why different animals use their sensory systems in order to consume foods so that their diets contain the right balance of nutrients. Understanding animals in th...

Nick talks to Dr. Christoffer Clemmensen, who runs the Metabolism & Molecular Pharmacology group at the University of Copenhagen in Denmark. His lab studies the biological basis of obesity & other metabolic disorders. They discuss: the causes of obesity; environmental and biological factors influencing predisposition to obesity; novel anti-obesity drugs; gut hormones & peptides regulating food int...

Nick talks to biologist Dr. Christoph Thaiss, a professor at the University of Pennsylvania. His lab studies how the body detects & responds to environmental stimuli, with a focus on interactions between the gut microbiome, immune & nervous systems. They discuss: sensory systems of the body & basic principles of how they work; gut microbiome & the consequences of depleting it with antibiotics; end...

Nick talks to biochemist & biophysicist Dr Ryan Gumpper, a postdoc in Dr. Bryan Roth's lab at the University of North Carolina. They discuss the biochemistry, molecular biology & biophysics of serotonin receptors, including the molecular details for what happens when serotonin and tryptamines psychedelics (e.g. LSD) bind to 5HT2A receptors in the brain. They also discuss how understand these detai...

Nick talks to anesthesiologist & neuroscientist Dr. Alex Proekt, who runs a lab at the University of Pennsylvania, about altered states of consciousness. They discuss: NREM & REM sleep, anesthesia & anesthetic drugs like propofol; coma & vegetative states; sleeping pills like Ambien; the relationship between consciousness & the underlying brain dynamics; how ketamine differs from other anesthetics...

Nick talks to Jay Bhattacharya, MD, PhD, who is a professor of medicine & economics at Stanford University. They discuss various aspects of the COVID pandemic, such as: how infectious, transmissible, and deadly SARS-CoV-2 is; mRNA vaccines, how well they stop transmission vs. severe COVID, and whether they can induce negative side effects such as myocarditis; how well masks really work; Jay's incl...

Nick talks to Dr. Sergiu Pasca, a developmental neuroscientist and professor at Stanford University. They discuss topics related to human brain development, the origins of neuropsychiatric disease like autism & schizophrenia, new technologies for studying brain development, stem cells, and recent experiments from Dr. Pasca'a lab utilizing brain "organoids," "assembloids," and human-animal transpla...

Nick talks to Saoirse O'Sullivan, PhD, a physiologist specializing in the physiological effects of cannabinoids. Dr. O'Sullivan ran a lab at the University of Nottingham for many years before becoming a consultant and Vice President of Translational Research at Artello Biosciences. Nick and Saoirse discussed some of the physiological effects of cannabinoids in the body, including endogenous cannab...

Nick talks to computational neuroscientist Dr. Zach Mainen, a neuroscientist and director of the Champalimaud Neuroscience Programme at the Centre of the Unknown in Lisbon, Portugal. His lab studies the neuroscience of decision making, neuromodulation & behavior using both experimental and computational approaches. They discuss: what kinds of things animal brains are actually computing, and to wha...

Nick talks to mathematical biologist Dr. Alex Washburne about the origins of the SARS-CoV-2 virus. * Click here to download audio, watch video, or read show notes & transcripts. * If you enjoy my content and want to further support M&M, please read this . This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit mindandmatter.substack.com...

Nick talks to experimental psychologist Dr. Harriet de Wit, a professor at the University of Chicago whose lab studies the behavioral effects of psychoactive drugs on humans. They discuss: the effects of MDMA on emotional perception and touch sensation; the effects of microdosing LSD; THC's impact on memory. * Click here to download audio, watch video, or read show notes & transcripts. * If you en...

Nick talks to biological anthropologist & neuroscientist Dr. Terrence Deacon, who is a professor of biological anthropologist at UC-Berkeley and a leading thinker on the evolution of language, consciousness and human cognition. They discuss: how end-directed systems, such as life, can emerge from non-life; how complexity evolves once life originates; the origins of sentience and a sense of self; t...

Nick talks to neuroscientist Dr. Kent Berridge, a professor of psychology & neuroscience at the University of Michigan. They discuss: the neurobiology of the brain processes rewards and generates pleasure & motivation; the difference between "liking" and "wanting"; hunger and whether food addiction is similar to drug addiction; emotion and consciousness; and more. * Click here to download audio, w...

Nick talks to Dr. Amir Englund, a psychopharmacologist at the Institute of Psychiatry, Psychology & Neuroscience at King's College, London. Dr. Englund's research focuses on the effects of cannabis, medical marijuana and specific cannabinoids (e.g. THC, CBD, THCV) on human cognitive function. They discuss topics including: what is the addiction liability of marijuana? What are the acute & chronic...

Nick talks to molecular physiologist Dr. Dudley Lamming, a professor of medicine at the University of Wisconsin-Madison whose lab studies how the body responds to the nutrient and calorie content of food. We discuss: how the protein and amino acid composition of food impacts metabolic health & aging; branched chain amino acids & disease; sex differences between males & females in how diet affects...

Nick talks with Dr. Anil Seth, a neuroscientist and professor of cognitive & computational neuroscience at the University of Sussex. The conversation is all about the neuroscience of consciousness, which is the subject of his Dr. Seth's book, “Being You: A New Science of Consciousness.“ They touch on everything from what consciousness actually is, whether or not neuroscientists can measure differe...

Nick talks to neuroscientist and writer Dr. Erik Hoel. Erik is a professor of biology at Tufts University. He received his PhD in neuroscience from the University of Wisconsin, where he studied under the sleep and consciousness researcher, Giulio Tononi. He did postdoctoral work at Columbia University, where he used information theory and other analytical tools to explore the biological basis of c...

Nick Jikomes talks to Dr. Steven Laviolette, a neuroscientist at the University of Western Ontario. They discuss how different types of drugs impact emotion, cognition, brain development and the development of psychiatric conditions  (e.g. addition, schizophrenia); drug interactions (THC + CBD, THC + L-Theanine, CBD + Omega-3 Fatty Acids), how drugs can affect brain development when consumed durin...

Nick talks to genetics researcher & writer Razib Khan. Razib did graduate work in genetics at the University of California-Davis and recently founded a genomics data startup. He also runs a Substack, "Unsupervised Learning," where he writes a lot of fascinating articles on the subjects of human evolutionary & population genetics, personal genomics, and more. Nick and Razib discussed: how the story...

Nick talks to Christian Lüscher, MD, PhD, a neuroscientist at the University of Geneva whose lab studies the cellular mechanisms that underlie drug reinforcement, dependence and addiction. Dr. Lüscher talks about the nature of addictive drugs in the brain, how ketamine works, and the latest research from his lab look at how ketamine's unique effects within the brain's reward circuitry enable it to...

Nick talks to neuroscientist Dr. David Anderson, a professor at Caltech whose lab studies the neurobiological basis of animal behavior and emotion. They discuss: technologies for understanding cause-and-effect in the brain; neurobiological basis of animal behavior, including aggression/fighting, mating, feeding, and social behavior; how hormones such as estrogen regulate behavior; emotions, feelin...