Chasing Consciousness Joseph Le Doux PHD - FEAR, EMOTIONS AND THE EVOLUTION OF CONSCIOUSNESS
In episode #11 we explore the way emotions work, and particularly fear - the way it’s triggered, what happens in the brain and how much we are conscious of what’s going on. I think this is really relevant as we appear to be an extremely fearful, defensive and argumentative society in general, and perhaps if we understood what was happening inside us we might be able to limit some of the damage these kind of encounters produce. We also look at the the Limbic System and Triune Brain theories of emotions and the evolution of the brain, and find out why these hugely popular theories in Psychology are no longer really considered true by neuroscientists. Perhaps we can salvage something useful from these theories for psychology, as some really effective therapies have been based on them in the past.
So who better to help us clarify all this than emotion and fear specialist, neuroscientist Joseph LeDoux.
Dr Le Doux is the Henry and Lucy Moses Professor of Science at NYU in New York in the Center for Neural Science, and he directs the Emotional Brain Institute of NYU and the Nathan Kline Institute. He is also a Professor of Psychiatry and Child and Adolescent Psychiatry at NYU Langone Medical School. His work is focused on the brain mechanisms of memory and emotion and he is the author of The Emotional Brain, Synaptic Self, and Anxious and his most recent book that we’ll be talking mostly about today “Deep History of Ourselves and the evolution of consciousness”. He has received loads of awards, including prizes from the Association for Psychological Science, the American Philosophical Society, the IPSEN Foundation and the American Psychological Association. His book Anxious received the 2016 William James Book Award from the American Psychological Association. Awesomely, he is also the lead singer and songwriter in the rock band, The Amygdaloids and performs with Colin Dempsey as the acoustic duo So We Are.
What we discuss in this episode:
PART 1
05:16 Jo joined Mike Gazzaniga’s lab in the late 60’s
07:00 The neuroscience of being afraid and under threat
09:00 Left Brain Interpreter: Consciousness is a narration making sense of our behaviour (See Episode #3)
16:45 The Amygdala: Raised heart rate and sweaty palms are not the emotion of fear
33:00 A criticism of Paul MacLean’s Limbic system and Triune Brain theories
40:00 The Amygdala is misunderstood when associated with fear rather than threat stimuli processing
45:45 We should keep mental state terms and behaviour terms separate
47:00 Threat hormones like cortisol can affect rational thinking in the frontal cortex
PART 2:
52:00 The conscious experience of anxiety and fear is often where the problem lies, not the physiological mechanisms the medication is treating
59:30 3 types of noetic consciousness: breaking it down to try and learn more
1:14:00 Contrary to darwinism, cognition came before emotions
1:15:30 Reconciling the disconnect between experiences and brain activity
1:24:00 W.H.Auden "The age of anxiety" poem
1:27:00 Focussing on improving how we feel over how we behave
References:
Leon Festinger’s theory of Cognitive Dissonance
Endel Tulving - 3 types of noetic consciousness
Steve Flemming UCL - subjective self awareness in the frontal pole area