Ies [FIGS]; Maxwell, 1992). Testing Session Procedures Prior to testing, participants abstained for >3 hr from caffeine and/or smoking/nicotine, at the same time as from alcohol/drugs (other than contraceptives and medication required for any stabilized physical condition) beginning at midnight. Upon arrival to the laboratory, subjective mood evaluations were carried out. Concurrently, electrodes have been applied, immediately after which the experiment commenced. This study was approved by the Royal Ottawa Well being Care Group along with the University of Ottawa Social Sciences and Humanities Research Ethics Boards and informed consent was obtained from all participants. Participants wereJ Have an effect on Disord. Author manuscript; accessible in PMC 2013 February 1.Jaworska et al.Pagecompensated 30.00 CDN/session (sufferers participated in multiple sessions as part of a larger study).NIH-PA Author Manuscript NIH-PA Author Manuscript NIH-PA Author ManuscriptSubjective Mood Questionnaires Mood was assessed together with the Profile of Mood States (POMS; McNair et al., 1992) on which participants rated their subjective state applying a Likert scale on 65 mood adjectives, from which values were aggregated to form seven mood dimensions (tension-anxiety, depressiondejection, anger-hostility, vigor-activity, fatigue-inertia, confusion-bewilderment and total mood disturbance). Emotional Faces Recognition Activity The faces recognition job was adapted from Krolak-Salmon et al. (2001). Thirty-six photographic faces displaying certainly one of 4 expressions (sadness [sad], joy, surprise [sur], neutral) had been presented individually on a screen in front with the seated participant ( 1 m) in a dim, electrically-shielded and sound-attenuated room. Each and every emotion was expressed at 3 intensities (20 , 50 , one hundred ) by one actor. Two males and two females displayed one particular emotion at all intensities (i.e., 16 actors). Expressions at 20 intensity had been viewed as “neutral” as they are not reliably distinguished (Orgeta Phillips, 2008) and 0 expressions are a lot more probably to become confused with damaging than with other facial expressions (Palermo Coltheart, 2004). Photographs had been digitized and converted to grey-scale images, matched for luminance and contrast, using the neck and hair cropped out (Figure 1). Each ISA-2011B expression (neutral, sad50, sad100, joy50, joy100, sur50, sur100) was pseudorandomly presented 80 occasions (no identical faces presented back-to-back) for 400 ms (ISI: 1500 ms; Presentation Software, Neurobehavioral Systems, Albany, CA, USA). Participants pressed a button to shocked faces (sur50, sur100) to ensure that they paid focus to expressions. Hits ( correct responses to sur50 sur100), false alarms (FA; responses to non-surprised faces) and reaction instances (RT) were recorded. Facial Expression Rating Questionnaire Following the job, participants rated 10 faces (a single male and one female expressing every single of joy50, joy100, sad50, sad100 and neutral) presented in the course of the job. Faces were rated employing a Likert scale from 0 (not at all) to 10 (extremely significantly) on two valence queries: how 1) “sad” and 2) “happy” does the face look. Participants rated the faces based on their gut reaction, taking two? min to rate all faces. Two questionnaire versions, containing unique faces but bearing the same expressions, were administered. No variations existed in between the versions, as a result, ratings were averaged across the questionnaires. Electrophysiological Recordings PubMed ID:http://www.ncbi.nlm.nih.gov/pubmed/21228935/ Information Reduction EEG activity was recorded (500 Hz) making use of a cap embedded.
