Understanding speech in noise (SiN) is a complex task involving sensory encoding and cognitive resources including working memory and attention. Previous work has shown that brain oscillations, particularly alpha rhythms (8-12 Hz) play important roles in sensory processes involving working memory and attention. However, no previous study has examined brain oscillations during performance of a c...

We present I/O-efficient fully persistent B-Trees that support range searches at any version in O(logB n + t/B) I/Os and updates at any version in O(logB n + log2 B) amortized I/Os, using space O(m/B) disk blocks. By n we denote the number of elements in the accessed version, by m the total number of updates, by t the size of the query’s output, and by B the disk block size. The result improves...

OBJECTIVES To conduct a fully independent, external validation of a research study based on one electronic health record database using a different database sampling from the same population. DESIGN Retrospective cohort analysis of β-blocker therapy and all-cause mortality in patients with cancer. SETTING Two UK national primary care databases (PCDs): the Clinical Practice Research Datalink...