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Figure 2: With patient in long sitting on examination table (a), supine positioning is done with head extended 30° on the short edge (b) for a minute. Thereupon, head is flexed about 30° above horizontal (chin to chest position) for a minute (c). Finally, patient is uprighted to long sitting (d). Abbreviations: AC, PC, and HC; anterior, posterior, and horizontal semicircular canals respectively

Figure 2: With patient in long sitting on examination table (a), supine positioning is done with head extended 30° on the short edge (b) for a minute. Thereupon, head is flexed about 30° above horizontal (chin to chest position) for a minute (c). Finally, patient is uprighted to long sitting (d). Abbreviations: AC, PC, and HC; anterior, posterior, and horizontal semicircular canals respectively