The Q wave is often negative because it reflects the depolarization of the interventricular septum from left to right in the heart, resulting in an initial negative deflection on the electrocardiogram. This is a normal finding in most individuals and is considered a part of the normal electrical activity of the heart.
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A point on a wave with negative amplitude is a trough. The trough is the lowest point on a wave where the amplitude is negative, representing the minimum displacement from the equilibrium position.
The trough of a wave is located at the lowest point of the wave, where the displacement is the most negative. It is the opposite of the crest, which is the highest point of the wave. When you illustrate a wave, you can depict the trough as the bottommost point of the wave.
A wave exhibits negative amplitude at the point where it reaches its lowest point below the equilibrium position.
The trough of a wave refers to the lowest point of a wave where the displacement of the medium is at its maximum negative value. It is the opposite of the crest, which is the highest point of the wave.
Negative amplitude in waveforms indicates a reversal in the direction of the wave's oscillation. It is significant because it represents a change in the wave's polarity or phase, which can affect how the wave interacts with other waves or systems.