International Journal of Psychophysiology ( IF 3 ) Pub Date : 2021-01-30 , DOI: 10.1016/j.ijpsycho.2021.01.019 Roger C McIntosh 1 , Tasneem Khambaty 2 , Maria M Llabre 1 , Krista M Perreira 3 , Hector M Gonzalez 4 , Mayank M Kansal 5 , Wassim Tarraf 6 , Neil Schneiderman 1
Chronic stress has a deleterious effect on prefrontal lobe functioning. Empirical evidence suggests elevated vagal tone, indexed by elevated heart rate variability (HRV), mitigates the effect of mental stress on frontal lobe function. Here, the mitigating effect of HRV on stress-related decrements in cognitive performance is assessed based on information processing speed (DSST), word fluency and verbal learning task performance. Artifact free electrocardiogram (ECG) data was analyzed from 1420 Hispanic/Latino adults from the Sociocultural Ancillary of the Hispanic Community Health Study/Study of Latinos (HCHS/SOL). A 12-lead ECG was used to collect short-term recordings of the root mean square of successive differences in all normal R-peak to R-peak intervals (RMSSD) and the change between adjacent beats and the standard deviation of those intervals (SDNN) as indices of total HRV. As predicted, an interaction emerged for HRV and stress on the task presumed to require the greatest prefrontal lobe involvement, i.e., the DSST. After accounting for sociodemographic factors, chronic stress was associated with better DSST performance amongst individuals at higher quartile of SDNN, but not RMSSD. The paradoxical effect for greater stress exposure on DSST performance may in part be explained by increased speed of information processing and decision making often reported in high-stress cohorts. The nature of this interaction highlights the importance of examining the relationship between stress and cognition across a spectrum of vagal tone.
中文翻译:
累积压力暴露对心率变异性升高的西班牙裔/拉丁裔信息处理速度的矛盾影响
慢性压力对前额叶功能有有害影响。经验证据表明,以心率变异性 (HRV) 升高为指标的迷走神经张力升高可减轻精神压力对额叶功能的影响。在这里,基于信息处理速度 (DSST)、单词流利度和语言学习任务表现评估 HRV 对压力相关认知能力下降的缓解作用。分析了来自西班牙裔社区健康研究/拉丁美洲人研究 (HCHS/SOL) 的社会文化辅助机构的 1420 名西班牙裔/拉丁裔成年人的无伪影心电图 (ECG) 数据。12 导联心电图用于收集所有正常 R 峰到 R 峰间隔 (RMSSD) 的连续差异的均方根的短期记录,以及相邻心跳之间的变化和这些间隔的标准偏差 (SDNN ) 作为总 HRV 的指标。正如预测的那样,HRV 和对假定需要最大前额叶参与的任务(即 DSST)的压力出现了相互作用。在考虑了社会人口因素后,慢性压力与 SDNN 较高四分位数的个体中更好的 DSST 表现相关,但与 RMSSD 无关。更大的压力暴露对 DSST 表现的矛盾影响可能部分是由于高压力人群中经常报告的信息处理和决策速度的提高。