neural dynamism - cells compete with each other to make connections, so that pathways are refined and facilitated. we have developed mechanisms to forget things and block them so that we can function in our current states
now relieved of the burden of carrying huge amounts of information
neuroplasticity gets hijacked - addictions - pleasure pathway - nucleus occumbens e.g. for dopamine release
problem with addiction e.g. drug addiction is not stopping but relapsing when in a situation which is familiar to them using it. one of predictors of relapse is anhedonia suffered (pharmacokinetics?)
Huntington's - Environmental enrichment shows delay in onset of motor deficits, neural stem cells impaired in their response due to lack of BDNF, environment partially rescues this, exercise repairs some neuro-degenerative activity.
Susan Greenfield - Personalisation of the brain, relationship - immune system, endocrine and nervous system - embodiment of brain in a body. Something physical - highly unique.
Dan Siegel - should we look at interpersonal relationships - system view - regulates energy and information flow - interconnected.
Michael Valuenzela - mind & brain never static, does stable concept of 'mind' exist. hierarchy of mindedness. May be neurologically distinct.
Jane Burns - brain & way mind develops is shaped by social environment.
SG Actions don't have consequences in video game - just play again. In life not so easy to undo action. Loss of meaning of past, present and future.
DS - concept of meaning - what has significance in our lives - evolved human brain over millions of years, in last 40,000 primary evoloution is cultural Inner way of integrating experiences in a path that allows us to go across time. Need for contingent communication - quality of interactions - responses that show being tuned into internal world. Meaning in a relational sense - mindsight - inner subjective world seen in another person - make sense of the narrative. Illusion that connections are what people are seeking - but not getting f2f information flow which is basis for social and emotional intelligence. Don't fully develop kindness and compassion
MV - lot of positive implications with technology for older people. Dealing with individual who is already well socialised - didn't grow up in 'toxic' environment. e.g. clinical trial - internet based cognitive training - indicating that can slow the decline by simple interventions & clinical trials in PD rely in person coming into lab and measuring tremor, gait - now
using wii's to record this movement at home. very powerful insight into physiology.
DS - one research - children watching videos - much poorer development skills shown - not video by itself but loss of time in relationships - f2f interactions (http://en.wikipedia.org/wiki/Baby_Einstein)
SG - young people - privacy - feel emboldened by more distant, sanitised environment - if not doing those things when have to do these things - tendency to avoid because of embarassment - self fulfilling prophecy.
JB - Pew Internet American Life - do our online connections mean that we have less offline ? for those people in the study/surveyed with online - have more offline connections. May enhance online connections. Yes there are a group who use games in an inappropriate way - only 25% playing game which considered harmful. Not an either / or - how can we navigate
and use it meaningfully
MV - technology - another manifestation of human culture and endeavour - within the lineage with changing media - same inherent human desires and creativity is fundamental
SG - games - always been vehicle for social interaction - to achieve - first time adult spent time and money to purchase an experience with no consequences. first time that games have been end in themselves
Historically wide thought published that the brain does not change after maturity - however more recently published thought says this is incorrect - plasticity in the brain does exist after maturity - through changes in synapses (neurons process signals down axon and release chemical hormone - neurotransmitter into the synapse) which increase or decrease the number of connections between the neurons. Plastic change does not necessarily mean good, once something has changed, if not for better, can still take a long time to do differently 1 - known as synaptic, brain circuits rewiring. Amount of interest in neuroplasticity probably down to advances in brain imaging especially fMRI although limitations of fMRI need to be taken into account (fMRI needs separate page)
The brain develops and changes maps of where every anatomical and physical feature is and how they are related / connected. Injuries, illness can cause cross wiring (and also collisions?) In some cases the existing brain map of an injured area may still be 'alive' processing nerve signals even after e.g. a limb has been removed.
History of neuroplasticity (MindHacks -todo)- examples of neuroplastic thought etc & link to anatomy brain illustration
Interesting for diseases such as Parkinsons which are degenerative - loss of dopamine neurons which affect motor function such as gait freeze - unable to move, tremor - e.g. loss of motor function often beginning in arm, movement of facial muscles etc
1-4 of 4