The modulation of BOLD variability between cognitive states varies by age and processing speed.

  title={The modulation of BOLD variability between cognitive states varies by age and processing speed.},
  author={D. Garrett and N. Kovacevic and A. McIntosh and C. Grady},
  journal={Cerebral cortex},
  volume={23 3},
  • D. Garrett, N. Kovacevic, +1 author C. Grady
  • Published 2013
  • Psychology, Medicine
  • Cerebral cortex
  • Increasing evidence suggests that brain variability plays a number of important functional roles for neural systems. However, the relationship between brain variability and changing cognitive demands remains understudied. In the current study, we demonstrate experimental condition-based modulation in brain variability using functional magnetic resonance imaging. Within a sample of healthy younger and older adults, we found that blood oxygen level-dependent signal variability was an effective… CONTINUE READING
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