“…Many studies did attempt to link dream recall or dream content attributes with specific neurophysiological indicators, most commonly with electroencephalograpy (EEG) measures, but such studies provide mixed results at best. For example, EEG correlates of remembering dreaming after REM sleep awakenings vary widely, from power reductions in alpha (Bertolo et al, 2003;Esposito et al, 2004;Chellappa and Cajochen, 2013), delta (Esposito et al, 2004), frontal beta (Chellappa et al, 2011), and 4-to 14-Hz activity (Lehmann et al, 1981), to power increases in 40-Hz (Llinas and Ribary, 1993), occipital beta (Chellappa et al, 2011), and theta (Marzano et al, 2011;Scarpelli et al, 2015). Studies attempting to uncover EEG signatures for specific dream qualities were quite uncommon (e.g.…”