On 02/09/2013, at 12:35 PM, Craig Weinberg <[email protected]> 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 > -- > You cing emails from it, send an email to > [email protected]. > To post to this group, send email to [email protected]. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
