The article doesn't show what you think it shows. "Spontaneous" doesn't mean 
what you think it means.

On 02/09/2013, at 12:35 PM, Craig Weinberg <whatsons...@gmail.com> wrote:

> http://ac.els-cdn.com/S0896627307006666/1-s2.0-S0896627307006666-main.pdf?_tid=4e78eb70-1321-11e3-bc23-00000aab0f01&acdnat=1378052132_997e220cfcf62a6d02d5ccd22660a221
> 
> The resting brain is not silent, but exhibits organized fluctuations in 
> neuronal activity even in the absence of tasks or stimuli. This intrinsic 
> brain activity persists during task performance and contributes to 
> variability in evoked brain responses. What is unknown is if this intrinsic 
> activity also contributes to variability in behavior. In the current fMRI 
> study, we identify a relation- ship between human brain activity in the left 
> somatomotor cortex and spontaneous trial-to-trial variability in button press 
> force. We then demonstrate that 74% of this brain-behavior relationship is 
> attributable to ongoing fluctuations in intrinsic activity similar to those 
> observed during resting fixation.
> The resting brain is not silent, but exhibits organized fluctuations in 
> neuronal activity even in the absence of tasks or stimuli. This intrinsic 
> brain activity persists during task performance and contributes to 
> variability in evoked brain responses. What is unknown is if this intrinsic 
> activity also contributes to variability in behavior. In the current fMRI 
> study, we identify a relation- ship between human brain activity in the left 
> somatomotor cortex and spontaneous trial-to- trial variability in button 
> press force. We then demonstrate that 74% of this brain-behavior relationship 
> is attributable to ongoing fluctuations in intrinsic activity similar to 
> those observed during resting fixation - See more at: 
> http://s33light.org/post/60036139333#sthash.sgzmIpwx.dpufThe resting brain is 
> not silent, but exhibits organized fluctuations in neuronal activity even in 
> the absence of tasks or stimuli. This intrinsic brain activity persists 
> during task performance and contributes to variability in evoked brain 
> responses. What is unknown is if this intrinsic activity also contributes to 
> variability in behavior. In the current fMRI study, we identify a relation- 
> ship between human brain activity in the left somatomotor cortex and 
> spontaneous trial-to- trial variability in button press force. We then 
> demonstrate that 74% of this brain-behavior relationship is attributable to 
> ongoing fluctuations in intrinsic activity similar to those observed during 
> resting fixation - See more at: 
> http://s33light.org/post/60036139333#sthash.sgzmIpwx.dpuf
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