In a textbook I am reading on image sensors the author uses the term "excursion" in reference to noise in an image sensor. Quote from the book:
"Figure 7.26(a) presents a noise histogram for a sense capacitance that is allowed to vary by noise modulation. Note that the Gaussian distribution is skewed because of a changing sense capacitance. This output represents a measured result. The Fig. 7.26(b) histogram assumes that the noise excursions do not influence the sense capacitance and therefore exhibits a symmetrical response".
What does the term excursion mean in this context? It seems that the author is simply referring to the fluctuations of the random noise in the sensor (i.e. excursions are synonymous with fluctuations). Am I understanding that correctly?