“…Experimentally identified cognitive parameters of great relevance for anxiety induction studies include past experience (133,134), expectancy and anticipation (109,124,125), appraisal of external and internal cues (109,114,126), helplessness (126), uncertainty and unpredictability (109,124,128,129), and the perception of threat/harm (109,124,130,131), response unavailability (124), control (129)(130)(131), situational cues (102,132,134), and bodily feelings (correct or incorrect; 117,118,121,[135][136][137][138]. The preceding excitatory state of the organism also has been shown to influence emotional responses (124).…”