Naslov
Prefrontal cortex activation during cognitive task as a predictor of stress resilience: fMRI vs fNIRS study

Autori
Kesedžić, Ivan ; Božek, Jelena ; Radoš, Milan ; Popović, Siniša ; Ćosić, Krešimir

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
7th Croatian Neuroscience Congress, Book of Abstracts / - , 2019, 75-75

Skup
7th Croatian Neuroscience Congress

Mjesto i datum
Zadar, Hrvatska, 12.09.2019. - 15.09.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
stress resilience ; PFC activation ; fMRI vs fNIRS

Sažetak
Stress resilience is of particular research interest in highly stressful professions, such as first responders, soldiers, pilots, air traffic controllers etc. One of the key brain areas responsible for stress regulation is the prefrontal cortex (PFC), whose activation can be imaged using functional magnetic resonance imaging (fMRI), as well as functional near- infrared spectroscopy (fNIRS). The fMRI is a well-known and complex brain imaging technique, which measures brain activation by detecting changes in the blood-oxygen-level-dependent signal, while the fNIRS is a much cheaper and simpler brain imaging technique, which provides a good insight into PFC activation by measuring the haemoglobin concentration in the PFC. This abstract compares these two techniques and illustrates the potential of fNIRS usage in stress resilience research. The study included ten right-handed male participants (mean age ± SD = 23.14 ± 1.19, the Edinburgh handedness inventory score ± SD = 76.35 ± 23.49) imaged using fMRI and fNIRS. Both experiments used a colour-word matching Stroop task that elicits the PFC and enables the measurements and estimations of inhibition, attention, and processing speed. The results show that the mean level of activation in the PFC using both fMRI and fNIRS is higher in blocks with tasks compared to blocks without tasks, particularly in the dorsolateral PFC. The correlation of the activation between the two techniques, after normalisation across ten participants, is r = 0.742 (p < 0.05). A significant correlation was found between a psychological questionnaire measuring stress resilience and the fNIRS task activation (r = 0.454, p < 0.05). The high correlation between fMRI and fNIRS activation is in line with previous research papers, which indicates that fNIRS, as a simpler and more affordable technique, could be used in a broad spectrum of stress resilience research. The correlation of fNIRS with psychological questionnaire indicates that fNIRS could be used in stress resilience prediction after further research. Although having limitations in spatial resolution, the simplicity of fNIRS recommends its usage in field-deployable and ambulatory applications.

Izvorni jezik
Engleski

Znanstvena područja
Računarstvo, Temeljne medicinske znanosti

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