The Chemistry of Chemistry | Maxwell Finklestein | TEDxYouth@SJII
## Speaker Context - Speaker role: Presenter (implied expert on human emotion/neuroscience). - Setting/Occasion: A presentation or talk. - Framing: Intention to answer deep questions about love, attraction, and emotion by exploring neurocognitive functions and hormones, moving beyond simple explanations like "because you like them." ## People - Klous Wakin: Swiss biological researcher who conducted an experiment in 1995 regarding human pheromones and mate preference. - Dean Brette: Neuroscientist at Cardiff University, author of *The Idiot Brain*. ## Organizations - NYU (New York University): Conducted a study that found the initial phase of passionate love wears off after about 30 months. - Journal of Social Cognitive and Affective Neuroscience: Published a study in 2011 investigating the brain activity of individuals experiencing long-term intense romantic love. - Journal of Neurophysiology: Published a study examining the brain activity of individuals suffering from a breakup. - Cardiff University: Affiliation of Dean Brette. ## Places - N/A ## Tools, Tech & Products - fMRI scanners: Used to investigate brain activity during periods of love and heartbreak. - T-shirts: Used in a 2010 study where women smelled shirts worn by men to test ovulation effects. ## Concepts & Definitions - Sexual selection: The subset of the darwinist theory of natural selection where one gender prefers members of the opposite sex with certain desirable characteristics, allowing those characteristics to be passed down. - MHC molecules: Molecules used to fight disease, preferred by women in men, as they suggest genetic diversity for offspring immunity. - Endocrine system: A collection of glands that produce hormones. - Lust: A desire for sex, distinct from the deeper bond of love. - Passionate love: The initial period of a relationship characterized by intense feelings of attraction and ecstasy, with physical manifestations like heart palpitations. - Reward/Motivation: Described as being associated with areas of the brain rich in dopamine and neurotransmitters. - Maternal attachment: A region of the brain associated with long-term love, dense with vasopressin and oxytocin, critical for monogamous pair bonding. ## Numbers & Data - 1995: Year Klous Wakin conducted an experiment on human pheromones. - 36%: America's obesity rate. - 2010: Year a study was conducted where women wearing t-shirts were studied around ovulation cycles. - 2011: Year a study was published investigating brain activity in long-term romantic love. - 17: Total number of men and women married an average of just over 21 years in the 2011 fMRI study. - 21 years: Average duration of marriage in the 2011 study. - 30 months: Duration after which the initial phase of passionate love is reported to wear off (according to NYU study). - 15: Number of college-age men and women whose brain activity was examined after a breakup. - 78%: Accuracy rate for blindfolded individuals decoding emotions by touch. - 25%: Chance value for decoding emotions by touch. ## Claims & Theses - The answer to why we feel attraction goes much deeper than just liking someone; it involves the neurocognitive functions of the brain and hormones. - The survival of the fittest concept applies to sexual selection, where desirable characteristics are passed down. - Female giraffes prefer mates with longer necks because it aids in finding food. - The study by Klous Wakin showed women preferred men whose MHC molecules were different from their own. - Feelings of happiness, sadness, or hunger are all caused by the release of a certain cocktail of different hormones. - Everything felt throughout love and attraction is controlled by hormones. - Lust says nothing about the bond of love in a relationship. - Flirting serves as the human equivalent of an animal's mating dance, allowing assessment of potential mates with low risk. - Touching triggers oxytocin release, enhancing trust and attachment. - Emotionally charged events (anger, fear, or joy) are characterized by a spike in norepinephrine. - Individuals experiencing passionate love show greater activation in areas like the CATE nucleus and ventral septal area. - The differences in NGF levels between passionate love and other groups faded when measured 12 to 24 months later. - Romantic love triggers surges in dopamine and norepinephrine, causing heart rate increases and motivating continued presence with the person. - During early love, there are abnormally low levels of Serotonin, similar to those found in individuals with obsessive compulsive disorder. - Areas rich in dopamine are consistently activated in both early-stage and long-term romantic love. - In long-term love, brain systems implicated in attachment and bonding play a greater role than in a newer relationship. - The pain of heartbreak activates the same neurological regions as physical pain, specifically the anterior cingulate cortex. - The brain does not distinguish between physical and emotional pain. - Romantic rejection can look like a form of addiction. - The brain adapts to expect the reward associated with a romantic partner. - Love is something that transcends science. ## Mechanisms & Processes - Sexual selection: Natural selection mechanism whereby one gender prefers certain traits in the opposite sex. - Hormone regulation: Function controlled by the endocrine system (glands producing chemical messengers). - Physiological response to emotion: Heart rate increases, muscles tense, breathing rate increases, and blood pressure rises when feeling intense emotion. - Flirting: A process acting as a "risk-free set of signals" to sample potential mates and exchange information about reproductive fitness and general health. - Decoding emotions by touch: The innate ability to interpret emotions solely through tactile input, achieving high accuracy rates. - Memory formation during peak emotion: Emotionally charged events cause a spike in norepinephrine, which cues nerve cells to enhance chemical sensitivity at memory circuits. - Long-term attachment formation: Brain systems utilizing vasopressin and oxytocin play a role in cementing monogamous pair bonding. - Pain processing: The nervous system activates the same regions for physical and emotional pain (e.g., anterior cingulate cortex). - Addiction withdrawal: The brain's response to romantic rejection mimics withdrawal symptoms, seeking dopamine rewards. ## Timeline & Events - 1995: Klous Wakin conducted an experiment on pheromones. - 2010: Study on t-shirts and ovulation cycles was conducted. - 2011: Study published on brain activity in long-term romantic love. - 12 to 24 months later: NGF levels were measured following the initial intense phase of love. - After about 30 months: The initial phase of passionate love is reported to wear off. - Current moment: The speaker is presenting this analysis. ## Examples & Cases - Giraffes: Female giraffes prefer mates with longer necks because those are more able to find food. - Women smelling t-shirts: In 1995, women preferred men whose MHC molecules were different from their own. - Physical manifestations of passion: Including heart palpitations and butterflies in the stomach. - First kiss: Described as a highly memorable occurrence in any relationship (assuming sobriety). - Cocaine use: Lowers the threshold of pleasure centers in the brain, a sensation paralleled in being in love. - Study participants (blindfolded): Attempted to decode emotions solely through touch, communicating 8 distinct emotions with high accuracy. - Couples reporting love: Viewed photos of partners in a 2011 study, showing specific activation patterns. - Individuals experiencing heartbreak: Analogy drawn to physical pain, triggering the anterior cingulate cortex. - Study participants in loss: Showed poor performance on cognitive tasks after reliving emotionally painful experiences. - Study participants (breakup): Showing brain activity similar to those recovering from drug addictions when viewing ex-partner photos. ## Trade-offs & Alternatives - Comparing lust versus deeper personal attraction associated with romance/love: Physical encounters require no fondness for the other person, but love requires a deeper bond. - Comparing initial passionate love versus long-term love: Early love has high levels of passion; later love is characterized by deeper bonding involving attachment systems. - Comparing dopamine reward systems: While present in both early and long-term love, the emphasis shifts from reward/motivation to attachment/bonding over time. - Comparing emotional connection vs. scientific understanding: The speaker suggests a love song illustrates the bond more effectively than scientific explanation. ## Counterarguments & Caveats - The answer to attraction is not as simple as "because you like them." - The hormonal cocktail causing emotions is complex, and emotions can get very complicated during relationships. - The speaker noted that the high levels of NGF found early on faded when measured 12 to 24 months later. - The physiological changes associated with passionate love are "shortlived" because the brain acclimates over time. - The speaker stated that the initial emotional incompetence in love is something they recognize in themselves. ## Methodology - Neurocognitive analysis: Using concepts from neuroscience to explain emotions. - Hormonal assessment: Examining the role of chemical messengers (dopamine, norepinephrine, oxytocin, etc.). - Empirical studies: Drawing upon research conducted by others (e.g., 1995 pheromone study, 2010 ovulation study, NYU study, fMRI studies). - Comparative analysis: Comparing brain activity during different relationship stages (passionate vs. long-term vs. loss). ## References Cited - Darwinist theory of natural selection (concept basis). - Article published in Psychology Today (on flirting). - Study conducted in 2010 (on t-shirts and ovulation cycles). - Study published in Journal of Social Cognitive and Affective Neuroscience (2011). - Book: *The Idiot Brain* by Dean Brette. - Study published in Psychological Science (on pain perception). - Study published in Journal of Neurophysiology (on breakup brain activity). ## Conclusions & Recommendations - Behavior relating to romantic rejection can be difficult to control, even when known to be bad (like stalking exes on social media), because the brain seeks dopamine reward. - Breakup pain is impermanent; eventually, the brain will normalize dopamine levels, and stress hormones will recede. - The ultimate understanding of love requires more than science; a poem is offered as an alternative articulation. ## Implications & Consequences - If sexual selection is accurate, it dictates that humans are "enslaved by our brains... to generally gravitate towards certain people." - Failure to process heartbreak pain is neurologically equivalent to a substance withdrawal/addiction cycle. - The initial phase of love is physiologically characterized as an "arousing yet stressful experience." ## Open Questions - How are we programmed to respond in certain ways when feeling attraction? - How do we even feel this attraction in the first place? ## Verbatim Moments - "The answer goes much deeper than that deep into the neurocognitive functions of the brain and the cocktail of different hormones responsible for our emotions." - "Why is finding the one or using a more animalistic term a St mate important? Why not just mate with anyone?" - "Survival of the fittest." - "Lust says nothing about the bond of love in a relationship." - "Flirting serves as the human equivalent of an animal's mating dance." - "We are conveying our feelings sending a message to other people to tell them we interested in them." - "It's not just taking cocaine or being in love that we enjoy but it's that these things make everything else feel even better." - "I'm just as emotionally incompetent now as when I started preparing for this presentation." - "Hurt and pain there's much to gain peace and love it's all the same."