To snack or not to snack: Using fNIRS to link inhibitory control to functional connectivity in the toddler brain.
Dev Sci 2022;
25:e13229. [PMID:
35005833 DOI:
10.1111/desc.13229]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/15/2021] [Accepted: 12/24/2021] [Indexed: 11/29/2022]
Abstract
Inhibitory control (IC) emerges in infancy (Holmboe, Bonneville-Roussy, Csibra, & Johnson, 2018), continues to develop throughout childhood (Lui, Zhu, Zeigler, & Shi, 2015; Ordaz, Foran, Velanova, & Luna, 2013) and is linked to later life outcomes such as school achievement, prosocial behavior, and psychopathology (Duckworth, Tsukayama, & Kirby, 2013; Jaekel, Madzwamuse, & Wolke, 2015). Little, however, is known about the neural processes underpinning IC, especially in 2-year-olds. In this study, we examine functional connectivity in 2.5-year-olds while recording hemodynamic responses via functional infrared spectroscopy (fNIRS) during a traditional snack delay task. We found that functional connectivity strength between left frontal and parietal cortex and bilateral parietal cortex were positively associated with performance on this task. The current findings present the first neural data for toddlers during this inhibitory control task. Further, these data are the first to link this self-regulatory process to differences in brain development within this population. Implications for future directions and work with clinical populations are discussed. This article is protected by copyright. All rights reserved.
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