fcMRI?Mapping functional connectivity or correlating cardiac-induced noise?

PSA screening: correlating noise with noise?

L Perron and colleagues conclude that the fall in prostate cancer mortality observed since 1995 is not the result of increased screening activity. They base this on a comparison of the size of the change in prostate cancer incidence rates in 1993 with the size of the change in prostate cancer mortality rates in 1999. Although there clearly is a relation between the overall provincial numbers fo...

Functional connectivity MR imaging: fact or artifact?

Brain Functional Connectivity Changes During Learning of Time Discrimination

The human brain is a complex system consist of connected nerve cells that adapts with and learn from the environment by changing its regional activities. Synchrony between these regional activities called functional network changes during the life, and with learning of new skills. Time perception and interval discrimination are among the most necessary skills for the human being to perceive mot...

Resting-state Functional Connectivity During Controlled Respiratory Cycles Using Functional Magnetic Resonance Imaging

Introduction: This study aimed to assess the effect of controlled mouth breathing during the resting state using functional magnetic resonance imaging (fMRI). Methods: Eleven subjects participated in this experiment in which the controlled “Nose” and “Mouth” breathings of 6 s respiratory cycle were performed with a visual cue at 3T MRI. Voxel-wise seed-to-voxel maps and whole-brain region of i...

Correlating Adaptation Eeort with Functional Distance

While it is abundantly clear that black box reuse ooers the best return on investment in terms of quality gains and productivity gains, it is equally clear (on the basis of empirical evidence) that black box reuse accounts for a small percentage of code that is developed with reuse. Applications that are developed with reuse typically include no more than 15 % of black box-reused code, vs 60 to...