Intriguingly, in a recent fMRI study the typical "default brain" activation was not affected by eyes position and was similar for eyes open and eyes closed.
Brain activation is not as simple as it may seem to be.
Interestingly, the effect of bilingualism on brain activation was not greater for naming than reading aloud.
The SVM was then trained on this data to learn the patterns for both scene types, using a leave-one-out methodology to provide a test case: for 1 participant brain activation was not included in the training.
Similarly, the findings of decreased cortical activations in prostate cancer patients undergoing ADT, despite similar performance scores on neurocognitive testing, indicate that changes in brain activations were not a result of these patients being less engaged in the task, as compared with their counterparts.
In contrast, since the possibility of the intracranial changes during the hand-motor task being caused by crosstalk artifacts between layers could not be ruled out, the ability of SSR to remove all extracerebral contribution from the reconstructed brain activations was not fully confirmed.
But this discards a vast amount of data – any areas of the brain that show weak activation aren't considered for further analysis, as they're assumed to not be substantially involved in whatever it is that you're measuring.
Second, the effect of medication on brain wave activity and/or activation were not included in the analysis, nevertheless medications were stable prior and post MBCT intervention Third, the control group did not undergo MBCT, which limits our understanding in the effects of MBCT on brain activity and activation.
Flux through the increased size of the brain lactate pool during activation is not known, rates of release and shuttling cannot be directly assayed, and contributions of lactate to functional metabolism during activation of normal sedentary subjects remain to be established.
