21. This is thought to increase processing latency and salience, and diminished working memory . 22. Working memory is assessed when the rats enter each arm a single time.23. By gesturing, they can free up working memory for other tasks. 24. Working memory is a theoretical concept central both to cognitive psychology and neuroscience.25. Working memory may decay in proportion to information or an event s salience.26. Working memory performance may also be increased by high intensity exercise.27. Mentally integrating the two pieces can require considerable working memory resources. 28. Re-entry into the arms would result in a working memory error. 29. Past research linked working memory as the weakness in understanding sentences. 30. Exercise specifically increases executive brain functions such as attention span and working memory .