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  #16  
Old Oct 9, 2008, 09:27 PM
Don Hardy Don Hardy is offline
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Crimean War and the brain

Allan :

The brain was first mapped on the battlefields of the Crimean War. As soldiers were dying, the neuro psych crew probed the areas with electrodes. If I remember correctly Broca was one of the neurologists with a battery probe and (this I do know) the speech centre was named after him. Some poor bastard probably yelled at him while he was being jolted......
Interestingly enough the centre for speech is left brain and the centre for language is right brain. I've done music therapy with adults who aphasic post trauma, and singing, especially in pro musicians, is a very useful tool for regaining speech. Doesn't always work, but I have a fair number of success stories. Pre-morbidity music lessons are a good indicator for success. Another argument for getting kids to study music - lots of research to show how music enlarges the neuro-transmitters between the lobes. Apparently this phase of brain development was missed on Stephen Harper who plays the piano quite stiffly.
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  #17  
Old May 6, 2011, 07:46 AM
Allan Johnston Allan Johnston is offline
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My Amygdala tells me you're a jazz musician...

http://www.sciencedaily.com/releases...0503081151.htm

Web address:
http://www.sciencedaily.com/releases/2011/05/
110503081151.htm

Amygdala Detects Spontaneity in Human Behavior: Study of Jazz Musicians Reveals How Brain Processes Improvisations

ScienceDaily (May 5, 2011) — A pianist is playing an unknown melody freely without reading from a musical score. How does the listener's brain recognise if this melody is improvised or if it is memorized?

Researchers at the Max Planck Institute for Human Cognitive and Brain Sciences in Leipzig investigated jazz musicians to discover which brain areas are especially sensitive to features of improvised behaviour. Among these are the amygdala and a network of areas known to be involved in the mental simulation of behaviour. Furthermore, the ability to correctly recognise improvisations was not only related to the musical experience of a listener but also to his ability to take the perspective of someone else.

The ability to discriminate spontaneous from planned (rehearsed) behaviour is important when inferring others' intentions in everyday situations, for example, when judging whether someone's behaviour is calculated and intended to deceive. In order to examine such basic mechanisms of social abilities in controlled settings, Peter Keller, head of the research group "Music Cognition and Action" at the Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig and his research associate Annerose Engel investigate musical constellations ranging from solos and duos to large musical ensembles. In a recent study, they investigated the brain activity of jazz musicians while these musicians listened to short excerpts of improvised melodies or rehearsed versions of the same melodies. The listeners judged whether each heard melody was improvised.

"Musical improvisations are more variable in their loudness and timing, most likely due to irregularities in force control associated with fluctuations in certainty about upcoming actions -- i.e., when spontaneously deciding what to play -- during improvised musical performance," explains Peter Keller. The amygdala, part of the limbic system, was more active while listening to real improvisations and was sensitive to the fluctuations of loudness and timing in the melodies. Thus, the amygdala seems to be involved in the detection of spontaneous behaviour, which is consistent with studies showing an involvement of this structure when stimuli are difficult to predict, novel or ambiguous in their meaning.

If a melody was judged as being improvised, regardless of whether this was in fact the case, stronger activity was found in a network which is known to be involved in the covert simulation of actions. This network comprised the frontal operculum, the pre-supplementary area and the anterior insula.

"We know today that during perception of actions, similar brain areas are active as during the execution of the same action," explains Annerose Engel. "This supports the evaluation of other people's behaviour in order to form expectations and predict future behaviour." If a melody is perceived as being more difficult to predict, for example, because of fluctuations in loudness and timing, stronger activity is most likely to be elicited in this specialised network.

A further observation the researchers made may be related to this: Not only musical experience but also the capacity to take someone else's perspective played an important role in judging spontaneity. Jazz musicians who had more musical expertise in playing the piano and playing with other musicians, as well as those who more often described themselves as trying to put themselves in someone else's shoes were best at recognizing whether a melody was improvised or not.
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  #18  
Old May 6, 2011, 08:35 AM
Coat Cooke Coat Cooke is offline
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For those interested in improvisation

Here is a great web site for those interested in reading about improvisation.
http://www.criticalimprov.com/issue/current
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