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http://hdl.handle.net/10397/89586
Title: | Negative mood is associated with decreased prefrontal cortex functioning during working memory in young adults | Authors: | Yeung, MK Lee, TL Chan, AS |
Issue Date: | Jun-2021 | Source: | Psychophysiology, June 2021, v.58, no,6, e13802 | Abstract: | The prefrontal-subcortical model of emotion regulation postulates that decreased prefrontal cortex (PFC) functioning may underlie the emergence of clinical affective disorders. In addition, accumulated evidence suggests that there is considerable variability in negative affect in the nonclinical population. This study examined whether negative affective symptoms were associated with decreased PFC functioning in nonclinical young adults. Forty college students aged 18–24 years (ten males) underwent an n-back paradigm (i.e., a frontal executive task) with a working memory (WM) load (i.e., 3-back) and a vigilance control condition (i.e., 0-back) while their hemodynamics changes in the lateral and medial PFC on both sides were monitored using a 16-channel functional near-infrared spectroscopy (fNIRS) system. They also filled out the Depression Anxiety Stress Scales (DASS) to estimate the levels of their negative emotions in the preceding week. Young adults exhibited an increased concentration of oxyhemoglobin and a decreased concentration of deoxyhemoglobin (i.e., activation), primarily in the lateral PFC, in response to the WM load (i.e., 3-back > 0-back). Importantly, higher DASS scores indicating higher levels of recent negative mood, especially depression and stress rather than anxiety symptoms, correlated with lower WM-related activation in the lateral PFC. Thus, recent negative mood is associated with decreased lateral PFC functioning during the executive control of WM in healthy young adults. Our findings suggest that decreased PFC functioning is also present in the nonclinical population with increased levels of negative mood and that fNIRS is a promising tool for elucidating individual differences in negative affective symptoms. | Keywords: | Anxiety DASS Depression fNIRS Hemodynamic response N-back |
Publisher: | Wiley-Blackwell | Journal: | Psychophysiology | ISSN: | 0048-5772 | DOI: | 10.1111/psyp.13802 | Rights: | © 2021 Society for Psychophysiological Research This is the peer reviewed version of the following article: Yeung, MK, Lee, TL, Chan, AS. Negative mood is associated with decreased prefrontal cortex functioning during working memory in young adults. Psychophysiology. 2021; 58:e13802, which has been published in final form at https://doi.org/10.1111/psyp.13802. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. |
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Yeung_Negative_Mood_Decreased.pdf | Pre-Published version | 2.08 MB | Adobe PDF | View/Open |
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