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Dragos Cirneci PhDDragos Cirneci PhD
Brain Research Institute
Neuromyths = common misconceptions about brain mechanisms,
which are taken for granted in today’s society
1. we have 5 senses2. “the primitive part of the brain”3. the rational vs the emotional brain 4. the brain as a camcorder5. new neurons doesn’t appear in adult brain6. genes vs environment effect7. mental problems as effect of childhood traumatic
memories
8. The most important myth is that consciousness dictates our decisions and actions
Dragos Cirneci
Neuromyths = common misconceptions about brain mechanisms, which are taken for granted in today’s society
1. we have 5 senses
Actualy we have at least 15 (discovered until now): sight (ophthalmoception), hearing (audioception), taste (gustaoception), smell (olfacoception), touch (tactioception) , feromonal sense, blue light sense, temperature (thermoception), kinesthetic sense (proprioception), sensors for lungs dilatation, pain (nociception), balance (equilibrioception), visceral sense (the perception of internal organs), chemical senses for detecting carbon dioxide concentration in the blood and sugar concentration.
Dragos Cirneci
Neuromyths = common misconceptions about brain mechanisms, which are taken for granted in today’s society
2. “the primitive part of the brain”
Human brain is similar in its organization and functions with all the mammals brain. Only some parts are more evolved but these parts exist also in mammals brain.
Dragos Cirneci
Neuromyths = common misconceptions about brain mechanisms,
which are taken for granted in today’s society
3. the rational/the emotional brain
Emotions appear almost in all parts of the brain. Differences consist only in timing and type of context/action.
Dragos Cirneci
Neuromyths = common misconceptions about brain mechanisms, which are taken for granted in today’s society
4. the brain as a camcorderThe memories are not “replayed from the tape” when they are remembered. The information stored in the brain is actually reconstructed and updated every time when we remember.
Every time when we do this that memory could become a new memory incorporating newinformation related with it.
We can learn only things related with what we already know
Dragos Cirneci
Schacter & Addis, 2007
Neuromyths = common misconceptions about brain mechanisms, which are taken for granted in today’s society
5. new neurons doesn’t appear in adult brain
The brain generates new neurons during the entire life. These new neurons are essential for learning and coping with stress.
Dragos Cirneci
Neuromyths = common misconceptions about brain mechanisms, which are taken for granted in today’s society
6. genes vs environment effect
The environment acts upon our brain by modifying the brain’s genes activity (some genes are turned on some are turned off). Learning and stress are actually examples of genetic effects– or more precisely “epigenetic effects”.
Dragos Cirneci Robinson et al. 2008
Neuromyths = common misconceptions about brain mechanisms,
which are taken for granted in today’s society
7. mental problems as effect of childhood traumatic memories
Adult mental problems are frequently rooted in childhood traumatic events but in most of the cases not the memory of the event is the cause of the problem. Traumatic events exert epigenetic effects upon the brain’s genes responsible for the circuits involved in adapting to novelty, fast changing environment, uncertainty and negative feedback.
Dragos Cirneci
TraumaBrain’s genes
BrainCircuits
Behavior&
emotions
Dragos Cirneci
Dragos Cirneci
genes vs environment effect
The environment acts upon our brain by modifying the brain’s genes activity (some genes are turned on some are turned off). Learning and stress are actually examples of genetic effects– or more precisely “epigenetic effects”.
Any enduring activity impacts brain’s genes and hence its functions
Dragos Cirneci
29-30 Septembrie 2010 13
Human species has evolved in the last 10.000 years 100 times
more than before and in the last 5000 years 7% of the genes have
changed !
The digital era & the brain
TV, games, computers, mobile phones & internet impact the brain Internet addiction is officially a mental disorder Internet withdrawal on teenagers causes frustration, irritability and
headache
Dragos Cirneci
The internet & the brain
There are positive and negative effects upon the brain
Dragos Cirneci
Negative effects:
Internet BrowsingMedia multitaskinge-Mails
Positive effects:
Action-based gamesSocial mediaPornographic sites
The positive effects
Dragos Cirneci
The positive effects
Dragos Cirneci
Action-based video-games activate brain’s reward pathway, increasing the secretion of dopamine
Effects on:
•Focused attention•Working memory•Decision making•Problem solving•Reaction time
The positive effects
Dragos Cirneci
• In USA 51% of Facebook users are above 40 year age
• The same 49% of YouTube users• …and 45% of Twitter users
The positive effects
Dragos Cirneci
Constant using of social media networks (Facebook) increases oxytocin levels in the brain and is associated with thicker gray matter in mirror neurons network
The mirror neurons
Dragos Cirneci
The positive effects
Dragos Cirneci
Constant using of social media networks (Facebook) increases oxytocin levels in the brain
The positive effects
Dragos Cirneci
In the countries were pornography is encouraged studies have shown a decrease of rapes and sexual related criminal acts
The negative effects
Dragos Cirneci
Internet browsing negatively impacts the brain. The effects are more visible in children and adolescents
Causes:
•Superficial reading•Impulsivity•Low creativity•Low focused attention
The negative effects
Dragos Cirneci
The negative effects
Dragos Cirneci
The negative effects
Dragos Cirneci
E-Mails are one of the most disrupting and stressing office tools
•12% of the work time is spent reading personal e-mails•One employee from a big company receives 400 e-mails/week•70% of them are opened in less than 6 seconds•Reading e-mail decreases the performance on IQ test with 10 points
The negative effects
Dragos Cirneci
Brain’s connections in stress & depression
In depression the brain genes involved in plasticity & learning are turned off
Chronic stress negatively impact connectivity in the brain
Dragos Cirneci Liston, McEwen & Casey, 2009
How we can control the negative effects of media
Dragos Cirneci
Dragos Cirneci
References
• Deng, W. et al. (2009) – Adult-born hippocampal dentate granule cells undergoing maturation modulate learning and memory in the brain. The Journal of Neuroscience, 29 (43), 13532-13542
• Liston, C., McEwen, B.S. and Casey, B.J. – Psychosocial stress reversibly disrupts prefrontal processing and attentional control. PNAS, 106 (3), 912-917
• Overby, D. (2007) – Free will: Now you have it, now you don’t. The New York Times Science supplement, january 2, 2007 http://www.nytimes.com/2007/01/02/science/02free.html?_r=1&pagewanted=all
• Robinson, G.E., Fernald, R.D. and Clayton, D.F. (2008) – Genes and social behavior. Science, 322, 896-900
• Schacter, D.L., Addis, D.R. and Buckner, R.L. (2007) – Remembering the past to imagine the future: the prospective brain. Nature Reviews Neuroscience, 8, 657-661
Dragos Cirneci Ph.D.Dragos Cirneci Ph.D.E-mail address: [email protected]
www.synergonconsulting.ro
Thank you for your attention!