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Acquired Lightheadedness in Response to Odors After Hyperventilation

Ilse Van Diest, PhD, Steven De Peuter, PhD, Katrijn Piedfort, MA, Johan Bresseleers, MA, Stephan Devriese, PhD, Karel P. Van de Woestijne, MD and Omer Van den Bergh, PhD

From the Department of Psychology (I.V.D.,S.D.P.,K.P.,J.B.,S.D., O.V.d.B.) and the Faculty of Medicine (K.P.V.d.W.), University of Leuven, Leuven, Belgium.


Figure 123
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  		Figure 1. Study design.

 

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  		Figure 2. Mean time (in seconds) elapsed before lightheadedness showing up during the test phase for CS+ and CS– trials during spontaneous breathing and normocapnic overventilation. Bars denote 95% confidence intervals.

 

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  		Figure 3. Mean fractional end-tidal CO2 during spontaneous breathing trials of the test phase for each CS+ odor group. Bars denote 95% confidence intervals.

 

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  		Figure 4. (A and B) Mean inspiratory and expiratory time during spontaneous breathing trials of the test phase for each CS+ odor group. Bars denote 95% confidence intervals.

 




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