Brain and Consciousness Your Brain Is a Work in Progress o1 Timeline: 7:45 – 9:00 Sun Sept Sept Monday Tuesday 11: Paradigms Wed Thursday Friday 13: Brain Development Mongolia Conference Sept Yom Kippur 27: Sleeping Oct 2: Science and Pseudoscience 4: Other Meditations Oct 9: Cosmic Consciousness 28: TM and TC Drfredtravis.com for copy of lecture power points Sat Our Brain Is Unassembled at Birth Dendrites, Dendritic spines Synaptic connections naturally increase during first 3 years of life. Number of Connections Increases and then Decreases oYears Why High Synaptic Density from 2-9 Years? – This is a physiological counterpart of all possibilities. This sets the stage for ongoing experience to enliven specific cortical circuits to deal with current experiences. Why Synaptic Pruning from 10-18 Years? – Pruning is not bad (garden analogy) – Pruning eliminates connections that are not used, and strengthens brain connections that are used. • This optimizes our ability to interact with the environment. Glial: Myelination—speed up the action potential 20 times Schwann Cell (body) Oligodendroglia (brain) Notice the Orderliness of Axonal Connections 1. Development Why might we learn Word of Wisdom at age 5, TM at 10, and TM-Sidhis at 15 years? Amount of Influence Experience Interacts with Natural Maturation 0 5 10 15 20 25 Years 30 35 40+ Neuroplasticity: Experiences changes the brain Buonomano, D.V., Merzenich, M.M., 1998. Cortical plasticity: from synapses to maps. Annual Review of Neuroscience, 21, Dendritic Spines change Minute-by-Minute Exercise: Let’s pretend we are neurons. Neurons cannot move, but they can move their arms around, and even grow new arms…. I’ll signal a person in front, who will tap people behind them and so on….let’s see how quickly the “tap” makes it to the back. Your Brain is a River, Not a Rock 70% of connections change every day…. London Taxi Cab Drivers It’s our Choice: Reinforce Old Habits or Make New ones Same decisions = Same brain patterns New decisions = New brain patterns Reduced frontal (executive center) and hippocampal (memory) volume. Evans & Schamberg (2009) Childhood poverty, chronic stress, and adult working memory, Proceedings of the National Academy of Sciences, 106(16) 6545– Negative Experiences Number of violent films Behavioral Data: After watching violent movies, you are less likely to help others. “The Brain That Repairs Itself” • Antibiotic led to dizziness • Restricted Mitt Technology for stroke victims Education: Encounter New Ideas When Law Students Study: Increased Myelination in frontal executive circuits. Mackey et al, 2012, Frontiers in Neuroanatomy It’s our Choice: Reinforce Old Habits or Make New ones FEED • Focus • Effort • Effortlessness • Determination Arden, Rewire Your Brain Transcending thought is infinitely more valuable than thinking. --Maharishi Four Months TM Practice Front Center Back TM Eyes Open Travis, 1991 Eight Years TM Practice Front Center Back TM Eyes Open Travis, 1991 Main Point Biologically driven processes sculpt the number of connections (synapses) and nature of the output fibers (myelination). The maturation of brain structure and functioning allows increasingly abstract levels of inner experience to be maintained in a stable way including growth towards enlightenment. Group Discussion Why does it take time to evolve? Brain Activity Associated with General Intelligence