Meta-analyses: what they can and cannot do

Meta-analyses overcome the limitation of small sample sizes or rare outcomes by pooling results from a number of individual studies to generate a single best estimate.As long as a meta-analysis is not limited by poor quality of included trials, unexplainable heterogeneity and/or reporting bias of individual trials, meta-analyses can be instrumental

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Sustained spatial attention to vibrotactile stimulation in the flutter range: relevant brain regions and their interaction.

The present functional magnetic resonance imaging (fMRI) study was designed to get a better understanding of the brain regions involved in sustained spatial attention to tactile events and to ascertain to what extent their activation was correlated.We presented continuous 20 Hz vibrotactile stimuli (range of flutter) concurrently to the left and ri

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