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. 2016 Feb 3;8:12. doi: 10.3389/fnagi.2016.00012

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Copyright © 2016 Tung, Burton, Quail, Mathews and Camp.

This is an open-access article distributed under the terms of Creative Commons Attribution License (CC BY). The use, distribution and reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Balance and motor performance is impaired in older mice after vestibular stimulation. Age-related changes were assessed using three different measures of balance beam performance across 1 (n = 9), 5–6 (n = 7), 8–9 (n = 7) and 27–28-month-old mice (n = 8). (A) The effect of the vestibular stimulus on time to start (TTS) walking was increased with age such that 27–28-month-old mice were more affected than 1-month-old and 5–6-month-old mice. (B) Changes observed in measurements of time to traverse (TTT) as a result of the vestibular stimulus were not age-dependent, however differences were apparent between 27–28-month-old mice and other age groups. (C) An age-related effect of the vestibular stimulus was also identified by the number of foot slips (FS). Error bars = SD, *p < 0.05, **p < 0.01, ***p ≤ 0.001.