TY - JOUR
T1 - Reduced prefrontal hemodynamic responses measured using near-infrared spectroscopy in adults with autism spectrum disorder
AU - Kamikawa, Kohei
AU - Yamamuro, Kazuhiko
AU - Mizui, Ryo
AU - Kashida, Natsuko
AU - Ishida, Rio
AU - Okada, Takashi
AU - Iwata, Nakao
AU - Makinodan, Manabu
N1 - Publisher Copyright:
Copyright © 2025 Kamikawa, Yamamuro, Mizui, Kashida, Ishida, Okada, Iwata and Makinodan.
PY - 2024
Y1 - 2024
N2 - Aim: Functional neuroimaging studies have suggested that prefrontal cortex dysfunction occurs in individuals with autism spectrum disorder (ASD). Near-infrared spectroscopy (NIRS) is a noninvasive optical tool used to investigate oxygenation and hemodynamic responses in the cerebral cortex by measuring changes in oxygenated hemoglobin. Previous studies using NIRS have suggested that male children with ASD exhibit reduced hemodynamic responses in the dorsolateral prefrontal cortex; however, only a few studies examined this response in adults with ASD. Methods: We examined the characteristics of prefrontal hemodynamic responses in 114 adults with ASD and 84 typically developing controls. Relative concentrations of oxygenated hemoglobin were measured with frontal probes every 0.1 s during the Stroop color-word task, using 24-channel NIRS. Results: Our findings demonstrated that the oxygenated hemoglobin changes in the ASD group were significantly smaller than those in the control group at channels 19, 20, 23, and 24- located over the orbitofrontal cortex and frontal pole (p <0.05 for all three channels). The differences in oxygenated hemoglobin changes at Ch 20 were significantly correlated with the Autism-Spectrum Quotient Japanese version (AQ-J) total score and attention switching score, which is a symptom cluster of AQ-J (p = 0.043 and p = 0.009, respectively). Conclusion: Adults with ASD have reduced prefrontal hemodynamic responses as measured using near-infrared spectroscopy and the reduced activity of the frontal pole in particular is related to reduced attentional function.
AB - Aim: Functional neuroimaging studies have suggested that prefrontal cortex dysfunction occurs in individuals with autism spectrum disorder (ASD). Near-infrared spectroscopy (NIRS) is a noninvasive optical tool used to investigate oxygenation and hemodynamic responses in the cerebral cortex by measuring changes in oxygenated hemoglobin. Previous studies using NIRS have suggested that male children with ASD exhibit reduced hemodynamic responses in the dorsolateral prefrontal cortex; however, only a few studies examined this response in adults with ASD. Methods: We examined the characteristics of prefrontal hemodynamic responses in 114 adults with ASD and 84 typically developing controls. Relative concentrations of oxygenated hemoglobin were measured with frontal probes every 0.1 s during the Stroop color-word task, using 24-channel NIRS. Results: Our findings demonstrated that the oxygenated hemoglobin changes in the ASD group were significantly smaller than those in the control group at channels 19, 20, 23, and 24- located over the orbitofrontal cortex and frontal pole (p <0.05 for all three channels). The differences in oxygenated hemoglobin changes at Ch 20 were significantly correlated with the Autism-Spectrum Quotient Japanese version (AQ-J) total score and attention switching score, which is a symptom cluster of AQ-J (p = 0.043 and p = 0.009, respectively). Conclusion: Adults with ASD have reduced prefrontal hemodynamic responses as measured using near-infrared spectroscopy and the reduced activity of the frontal pole in particular is related to reduced attentional function.
KW - autism spectrum disorder
KW - hemodynamic responses
KW - near-infrared spectroscopy
KW - prefrontal cortex
KW - stroop color‑word task
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U2 - 10.3389/fpsyt.2024.1507890
DO - 10.3389/fpsyt.2024.1507890
M3 - Article
AN - SCOPUS:85215271749
SN - 1664-0640
VL - 15
JO - Frontiers in Psychiatry
JF - Frontiers in Psychiatry
M1 - 1507890
ER -