Sensory Effects of Rapidly-Changing Magnetic Fields

Sensory Effects of Rapidly-Changing Magnetic Fields

This study is being conducted to improve magnetic resonance imaging (MRI) scans by reducing the time required for imaging. Experience has shown that unpleasant side-effects from magnetic pulses used in MRI (for example, tingling or tapping sensations) can be reduced when the magnetic pulses are shortened. In this study, we will explore whether this effect holds true when very short magnetic pulses are applied.

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Inclusion Criteria:

• Adults over 18, capable of informed consent

Exclusion Criteria:

• History of arrhythmia. Has implanted pacemaker or defibrillator, right wrist-to-sternum distance of less than 60 centimeters, visible tattoos of the right hand or wrist, or with any metallic objects that cannot be removed from the right hand or wrist. Irregular or imperceptible pulse. Heart rate less than 50 beats per minute or more than 100 per minute, resting respiratory rate greater than 25 per minute, diastolic blood pressure less than 50. Solid meal ingested within 2 hours prior to the study.