You can ask your doctor to compare this one to the
mastication induced arousal one I posted about earlier.
From
http://io9.com/5905964/chewing-gum-can-mess-with-your-mind
comes this suggestion.
So what might explain these contradictory results? The scientists at
Cardiff noted they used flavorless gum, while the past study used minty
gum. Flavor might make a key difference — the brain might better
remember tasks linked with pleasant experiences such as nice flavors.
http://www.ncbi.nlm.nih.gov/pubmed/22150606?dopt=Abstract
Abstract
Several studies have suggested
that short-term memory is generally improved by chewing gum. However, we
report the first studies to show that chewing gum impairs short-term
memory for both item order and item identity. Experiment 1 showed that
chewing gum reduces serial recall of letter lists. Experiment 2
indicated that chewing does not simply disrupt vocal-articulatory
planning required for order retention: Chewing equally impairs a matched
task that required retention of list item identity. Experiment 3
demonstrated that manual tapping produces a similar pattern of
impairment to that of chewing gum. These results clearly qualify the
assertion that chewing gum improves short-term memory. They also pose a
problem for short-term memory theories asserting that forgetting is
based on domain-specific interference given that chewing does not
interfere with verbal memory any more than tapping. It is suggested that
tapping and chewing reduce the general capacity to process sequences.
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