TY - JOUR AU - McGinnis, Ian AU - Tierney, Ryan AU - Mansell, Jamie AU - Phillips, Jacqueline PY - 2019/10/23 Y2 - 2024/03/29 TI - The Effect of target speed and verbal instruction on NPC measures in a young, healthy, and active population JF - Journal of Eye Movement Research JA - JEMR VL - 12 IS - 4 SE - Articles DO - 10.16910/jemr.12.4.5 UR - https://bop.unibe.ch/JEMR/article/view/JEMR.12.4.5 SP - AB - <div class="page" title="Page 1"><div class="section"><div class="layoutArea"><div class="column"><p><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPS'; font-weight: bold;">Purpose: </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">Evaluate the effect of target speed and verbal instruction on near point of convergence (NPC) measurements in a young, healthy, and active population. </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPS'; font-weight: bold;">Methods: </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">NPC was measured in 20 individuals with three target speeds and two sets of verbal instruction. The target speeds used were 1 cm/s, 3 cm/s, 5 cm/s, and participant self-paced. The verbal instruction given was either to indicate when the target became “double” or “blurry”. </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPS'; font-weight: bold;">Results: </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">Paired-samples t-tests revealed significant differences between 5 cm/s (5.44 </span><span style="font-size: 9.000000pt; font-family: 'SymbolMT';">± </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">2.01) and 1 cm/s (6.72 </span><span style="font-size: 9.000000pt; font-family: 'SymbolMT';">± </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">2.39, </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPS'; font-style: italic;">p </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">= .003), 3 cm/s (6.10 </span><span style="font-size: 9.000000pt; font-family: 'SymbolMT';">± </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">2.36, </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPS'; font-style: italic;">p </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">= .030) and self-paced (6.63 </span><span style="font-size: 9.000000pt; font-family: 'SymbolMT';">± </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">2.26, </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPS'; font-style: italic;">p </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">= .005). A significant difference (</span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPS'; font-style: italic;">p </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">&lt; .001) was also found between the “double” (6.72 </span><span style="font-size: 9.000000pt; font-family: 'SymbolMT';">± </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">2.39) and “blurry” (10.82 </span><span style="font-size: 9.000000pt; font-family: 'SymbolMT';">± </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">3.08) conditions </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPS'; font-weight: bold;">Conclusion: </span><span style="font-size: 9.000000pt; font-family: 'TimesNewRomanPSMT';">For young, healthy and active individuals, target speed and verbal instruction matter when measuring NPC. </span></p></div></div></div></div> ER -