Oxytocin - Is It Truly The Love Hormone? Wilson Tran, Oslín Licea Chávez, Jose Sandoval, Jon Zhang, Nari Kim, Denise Barroga, Chau Dang
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1 Oxytocin - Is It Truly The Love Hormone? Wilson Tran, Oslín Licea Chávez, Jose Sandoval, Jon Zhang, Nari Kim, Denise Barroga, Chau Dang
2 What is Love?
3 Love of Love The Chemistry Love is an emotion that involves many feel-good hormones Dopamine Oxytocin Vasopressin
4 Dopamine Vasopressin
5 Neuroanatomy and Physiology Neuropeptide hormone released by the pituitary gland but made in the Hypothalamus Right inferior frontal gyrus Generally associated with social communication and empathy Other important roles Social bonding Sex
6 Article #1 Puppy Love
7 Puppy Love A pet dog looks into its owner s eyes, the same hormonal response that bonds mothers to their infants is ignited. Those dog-owner pairs that spent the most time looking into each other s eyes experienced a spike in oxytocin. Rise in Oxytocin Levels Dogs: 130% Owners: 300%
8 Article #2 That Missing Feeling
9 Common Characteristics A difficulty identifying one s own feelings, and describing them A difficulty distinguishing between their own emotions and bodily sensations It is a personality trait, not a diagnosis About 10% have the personality trait, the rest of the population lies on a continuum Makes it harder to create and expand supportive social groups
10 Quick Facts: Alexithymia can result in limited thinking People with Alexithymia have a higher risk for mood disorders, interpersonal problems and and health problems Brain research is revealing that the neural processes supporting emotional awareness overlap with pathways that create awareness of inner states more broadly, such as stress and fatigue
11 Environmental Factors Emotional abuse and neglect can predict the emergence Culture plays a role as well by de-emphasizing emotional experience Mexican-American men exhibiting machismo had a higher alexithymia score Gender and societal norms can influence the expression of emotion, leading men to score higher on alexithymia Trauma and depressive incidents can also produce a temporary state of alexithymia ( state alexithymia )
12 Alexithymia and Interoception Studies show that individuals with alexithymia have less gray matter in the anterior insula Anterior insula helps govern emotions as well as interoception Alexithymia and interoception are inversely related Awareness of emotions requires interoception Emotional Education Promising treatment Linking physiological sensations to emotions Development of inward-thinking skills through therapy Alexythymics have emotions like everyone else, but they appraise them differently. Tom Hollestein
13 Article #3 The Hormones Behind Eye Contact
14 The Hormones Behind Eye Contact Briefest eye contact heightens empathetic feelings University of Cambridge neuroscientist Bonnie Auyeung Gives a sense of being drawn together Oxytocin given to normal men and those with Asperger s syndrome Increased number of fixations, 300ms pauses, on the eye region of interviewer s face during interview Studies have shown oxytocin increases looking at the eye Live interaction
15 Eye Contact and Behavior of Animals Difference in gaze depending on reward or punishment Provide a juice treat to its partner Deliver an unpleasant puff of air Engage in more eye contact Turned away or blink Neurological and behavioral symptoms of autism may be alleviated
16 Social Implications of Oxytocin
17 Oxytocin and Autism Ability of oxytocin to get those with autism to look at others in the eye Receive many social cues from the eye region Allow those with autism more opportunities to work on social skill building Showed pictures with either averted or direct gaze Responded to direct gaze, reduced activity in Medial frontal cortex Temporoparietal junction Posterior superior temporal sulcus region Amygdala
18 Article #4 Oxytocin and Mouse Hearing
19 Mommy Mice and Oxytocin Mouse mothers often move from nest to nest to avoid predators, carrying their offspring with them. The babies that fall off during the move cry out, prompting the mothers to backtrack and retrieve their lost pups.
20 So what s going on? A study found the hormone oxytocin alters the activity of neurons in the left auditory cortex of a mouse mother s brain, making her more in tune with the distress cries of lost pups
21 While mother mice respond to the cries by picking up the pups, even those that are not their own, virgin females generally ignore the ultrasonic distress calls.
22 Oxytocin in the virgin brain To understand the brain change that makes mothers more responsive to pups cries, researchers from New York University (NYU) injected oxytocin into the sound-processing auditory cortex of virgin females. The presence of the hormone caused the virgin females to retrieve the pups.
23 Oxytocin coordinates the neuronal response may be involved in learning and memory formation related to the sound of the distress calls. left auditory cortex contains neurons that are rich in receptors for oxytocin the hormone both enhances excitatory signals and reduces inhibitory signals in LAC Blocking the activity of the left auditory cortex with a drug caused the mothers to ignore the calls of their offspring.
24 Turning mice mothers into moms From the experiment, researchers found that oxytocin ultimately enables maternal behavior by enhancing auditory cortical pup call responses. It fine-tunes the way that pup calls activate neurons in the left auditory cortex. This enables females to clearly hear their pups calls within the din of normal life, thus making it possible for them to locate and retrieve their kids.
25 Oxytocin - Unlikely Testing to see how oxytocin could affect ethical decision making males receiving dosage of oxytocin or placebo - 3 teams of 20 males - Every member in team asked to predict the results of 10 coin tosses, if guessed correctly, earns money for team - Self-tossed, self-reported (but interesting) Effects
26 Results Among the placebo d men, 23% claimed they guessed 9/10 of the coin tosses correctly. For the oxytocin group of people, 53% claimed to have guessed 9/10 coin tosses correctly. To guess 9/10 coin tosses correctly, the probability of that actually happening is around 1% success. Main idea: So were the subjects who received oxytocin lying in order to benefit the group? My idea: Results suggest that oxytocin may have influenced people to potentially lie to help others out.
27 Summary
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29
30 Alexithymia α - no θυμός (thymos) Λέξις (léxis) - emotions/mood word No words for mood Lack of intrapersonal skills Emotional dysfunction/ emotional blindness Socially withdrawn Unempathetic Influence of environmental factors Inverse relationship with interoception
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