背景:暴饮暴食(BE)与一系列与冲动性有关的认知控制缺陷有关,包括较低的反应抑制,偏爱即时满足,和不适应的决策。目的是调查冲动性和BE是否可能与超重或肥胖门诊患者的决策过程和潜在的大脑活动相互作用,这些患者正在开始治疗以实现体重减轻。
方法:对26名超重或肥胖的门诊患者进行了冲动性评估,BE,和时间折现率。冲动性用Barratt冲动性量表(BIS-11)测量,根据这两组组成:高BIS和低BIS;BE是通过DSM5-Research版本的结构化临床访谈的饮食失调模块进行评估,根据其中两组组成:有(BE组)或无BE(NBE组)。奖励的主观价值的变化是用时间折扣任务(TDt)测量的,参与者必须在较早但较小的与之间进行选择后来,但更大的金钱奖励。这些选择是在两种不同的延迟条件下做出的(“现在”和“现在”)。在TDt期间通过高密度脑电图(hd-EEG)记录脑节律。
结果:BE患者报告了更多的冲动倾向,并且当两种选择都延迟时,感觉更快的奖励更令人满意(Not-nowcondition,p=0.02)。TDt中的奖励选择伴随着在顶叶区域观察到的一般EEGα带不同步,实验条件和患者组之间没有差异。在Now条件下或在其他EEG波段中未观察到影响。
结论:对于超重或肥胖的门诊患者,倾向于立即给予奖励的倾向可能构成了坚持治疗计划和实现减肥目标的障碍。因此,鼓励临床医生包括心理因素,比如冲动和功能失调的饮食行为,在设计减肥计划时。通过解决这些心理方面的问题,临床医生可以更好地支持患者克服依从性障碍并实现可持续减肥.
背景:这项研究得到了心理部伦理委员会的批准,健康,和基耶蒂-佩斯卡拉的G.d'Annunzio大学的领土科学(Prot.2017年3月14日第254号)。
BACKGROUND: Binge eating (BE) is associated with a range of cognitive control deficits related to impulsivity, including lower response inhibition, preference for immediate gratification, and maladaptive decision-making. The aim was to investigate whether impulsivity and BE may interact with the decision process and underlying brain activity in outpatients with overweight or obesity who are starting a treatment to achieve weight loss.
METHODS: A sample of 26 treatment-seeking outpatients with overweight or obesity was evaluated for impulsivity, BE, and temporal discounting rates. Impulsivity was measured with the Barratt Impulsiveness Scale (BIS-11), according to which two groups were composed: high BIS and low BIS; BE was assessed with the eating disorders module of the Structured Clinical Interview for DSM5-Research Version, according to which two groups were composed: with (BE group) or without BE (NBE group). Changes in subjective value of rewards were measured with the Temporal Discounting Task (TDt) where participants had to choice between sooner but smaller vs. later but larger monetary rewards. These choices were made in two differently delayed conditions (\"Now\" and \"Not-now\"). Brain rhythms were recorded through high-density electroencephalogram (hd-EEG) during the TDt.
RESULTS: Patients with BE reported more impulsive tendencies and perceived sooner rewards as more gratifying when both options were delayed (Not-now condition, p = 0.02). The reward choice in the TDt was accompanied by a general EEG alpha band desynchronization in parietal areas observed without differences between experimental conditions and patients groups. No effects were observed within the Now condition or in the other EEG bands.
CONCLUSIONS: The tendency to favor immediate rewards may constitute an obstacle to adhering to treatment plans and achieving weight loss goals for outpatients with overweight or obesity. Clinicians are therefore encouraged to include psychological factors, such as impulsivity and dysfunctional eating behaviors, when designing weight loss programs. By addressing these psychological aspects, clinicians can better support patients in overcoming barriers to adherence and achieving sustainable weight loss.
BACKGROUND: This study was approved by the Ethics Committee of the Department of Psychological, Health, and Territorial Sciences of the University G. d\'Annunzio of Chieti-Pescara (Prot. n. 254 of 03/14/2017).