Systematic signal increase or decrease occurs over time because of long-term physiological shifts, movement related noise remaining after realignment or instrumental instability (Lowe and Russell, 1999; Turner et al., 1997). The linear trend is usually removed in data preprocessing.
Submitted by dongzy08 on Sun, 04/24/2011 - 09:13 Permalink
Re:
Systematic signal increase or decrease occurs over time because of long-term physiological shifts, movement related noise remaining after realignment or instrumental instability (Lowe and Russell, 1999; Turner et al., 1997). The linear trend is usually removed in data preprocessing.