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An example of vasospasm in a control ear. No recovery of CBF (lower plot) and the corresponding DPOAE levels in response to 60-dB SPL primaries (upper plot) was observed at any monitoring frequency after a 3-minute IAA compression. For this and subsequent CBF plots: diamond, onset of IAA compression; triangle, release of IAA compression; dB SPL, decibels sound pressure level. See text for explanation of AU measures of CBF.
