Neurophotonics, Journal Year: 2021, Volume and Issue: 8(04)
Published: Dec. 8, 2021
Mayer waves are spontaneous oscillations in arterial blood pressure that can mask cortical hemodynamic responses associated with neural activity of interest.
Language: Английский
Developmental Science, Journal Year: 2025, Volume and Issue: 28(2)
Published: Jan. 14, 2025
ABSTRACT Newborns are able to neurally discriminate between speech and nonspeech right after birth. To date it remains unknown whether this early discrimination the underlying neural language network is associated with later development. Preterm‐born children an interesting cohort investigate relationship, as previous studies have shown that preterm‐born neonates exhibit alterations of processing a greater risk deficits. This investigation also holds clinical importance, differences in neonatal its functional networks may serve predictors outcomes. We therefore investigated using near‐infrared spectroscopy 92 preterm‐ term‐born predictive value for development 45 them. Three five years later, did not significantly differ comprehension, sentence production, use morphological rules, or phonological short‐term memory. In addition, gestational age at birth was significant predictor Neural discrimination, contrast, strongly correlated However, extent but rather lateralization, Children less hemisphere involvement—and more left‐lateralized birth—showed better memory three later. These findings suggest ability fetuses form traces reflected by abilities speech, which turn
Language: Английский
Citations
0
Trends in Hearing, Journal Year: 2025, Volume and Issue: 29
Published: Jan. 1, 2025
This study used functional near-infrared spectroscopy (fNIRS) to measure aspects of the speech discrimination ability sleeping infants. We examined morphology fNIRS response three different contrasts, namely “Tea/Ba,” “Bee/Ba,” and “Ga/Ba.” Sixteen infants aged between 3 13 months old were included in this their data recorded during natural sleep. The stimuli presented using a nonsilence baseline paradigm, where repeated standard novel blocks without any silence periods. responses varied contrasts. fit with model which sum two independent concurrent mechanisms that derived from previously published detection responses. These components an oxyhemoglobin (HbO)-positive early-latency HbO-negative late latency response, hypothesized be related auditory canonical brain arousal respectively. goodness was high median 81%. showed both had later when left ear test ( p < .05) compared right negative component, due arousal, smallest for most subtle contrast, “Ga/Ba” = .003).
Language: Английский
Citations
0
Brain Research, Journal Year: 2025, Volume and Issue: unknown, P. 149603 - 149603
Published: March 1, 2025
Tandem Gait (TG) under dual-task (DT) conditions may facilitate the investigation of important aspects dynamic balance and mobility, particularly concerning pathological motor cognitive aging processes. Our study aims to identify age-related differences in behavioral neural changes caused by interference during while TG. 20 young (YA, age 21.3 ± 1.86) 12 middle-aged adults (MA, 55.3 3.81) had perform TG tasks ((a) recite alphabet backward, (b) numbers letters alternately (oral TMT-B), (c) count backward from a given 3-digit number steps 3), DT (TG + tasks) for 30 s each. The cortical activation frontal lobe was recorded using an 8 sources × detectors fNIRS system. On data, MA displayed notably reduced accurate responses compared YA, though their remained comparable. From perspective, linear mixed model revealed significant task- group-related interaction effects only left dorsal lateral PFC. Compared showed lower over time DT, which can be attributed limitation resources lobe. This downregulation due overload, indicating that are approaching resources' capacity limit, when confronted with complex task demands.
Language: Английский
Citations
0
Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)
Published: April 15, 2025
Understanding speech in noise can be facilitated by integrating auditory and visual cues. Audiovisual temporal acuity, which indexed the binding window (TBW), is critical for this process enhanced through simultaneity judgment training. We hypothesized that multisensory training would narrow TBW improve understanding noise. Participants were randomized to receive either testing (n = 15) or testing-only over three days. Trained participants demonstrated significant narrowing their mean size (403ms 345ms; p 0.030), whereas control did not (409ms 474ms; 0.061). Although there no group-level changes word recognition scores, trained with larger decreases exhibited improvements (R2 0.291; 0.038). Individual differences responses found related cortical processing using functional near-infrared spectroscopy. Low audiovisual-evoked activity left middle gyrus 0.87; 0.006), angular superior 0.85; cortices 0.74; 0.041) was associated after Multisensory transfers benefits comprehension noise, effect may mediated upregulating networks individuals low baseline activity.
Language: Английский
Citations
0
Psychiatry Research Neuroimaging, Journal Year: 2025, Volume and Issue: unknown, P. 111993 - 111993
Published: April 1, 2025
Language: Английский
Citations
0
Frontiers in Aging Neuroscience, Journal Year: 2025, Volume and Issue: 17
Published: April 30, 2025
Background Patients with Parkinson’s disease (PD) commonly experience difficulties when performing a second task while walking. The mechanisms underlying dual-task walking deficits remain poorly understood. In previous studies the tasks were often simplistic, typically comprising questions from standardized cognitive assessments. Additionally, existing fNIRS comparing PD patients and healthy controls have reported inconsistent findings, limiting our understanding of prefrontal cortex (PFC) contributions to cognitive-motor integration. Methods Forty-two older adults (15 men 27 women, age 59.97 ± 5.58 years) fifty-eight (25 33 61.07 7.56 years, Hoehn Yahr stage 1∼3) enrolled. protocol consisted three repetitions these conditions: stationary marching two-digit arithmetic calculating. Researchers used measure PFC activation changes in △HbO2 concentration during execution. Results Healthy demonstrated task-dependent modulation - selective (6/22 channels, p < 0.05) single-task conditions contrasted global engagement (22/22 under demands. contrast, showed widespread across all 22 channel regions both single dual ( 0.05). During switching, subjects experienced significant increases 15/22 0.05), paralleled by rises ΔHbO2 concentrations five 0.05; Cohen’s d ranging 0.43 0.82). Conversely, exhibited no difference > between 0.30). Conclusion Findings indicate that simple underengage resources individuals, whereas engage greater meet heightened owing disruptions cortico-basal ganglia-thalamocortical circuitry, exhibit “ceiling effect” activation: increased difficulty fails elicit proportional activation, likely because already overtax resources. This divergence neural adaptability underscores core differences integration individuals patients, providing basis for developing targeted interventions enhance efficiency.
Language: Английский
Citations
0
Neuropsychologia, Journal Year: 2023, Volume and Issue: 182, P. 108520 - 108520
Published: Feb. 20, 2023
Language: Английский
Citations
10
bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown
Published: May 3, 2024
Abstract Recent years have witnessed a rise in research utilizing neuroimaging for precision neuromedicine, but clinical translation has been hindered by scalability and cost. Time Domain functional Near Infrared Spectroscopy (TD-fNIRS), the gold standard of optical techniques, offers unique opportunity this domain since it provides superior depth sensitivity enables resolution absolute properties unlike its continuous wave counterparts. However, current TD systems limited commercial availability, slow sampling rates, sparse head coverage. Our team overcome technical challenges involved developing whole-head time-domain diffuse tomography (TD-DOT) system. Here, we present system characterization results using standardized protocols compare them to state-of-the-art. Furthermore, showcase performance retrieving cortical activation maps during hemodynamic, sensory, motor tasks. A combination performance, signal quality, ease-of-use can enable future studies aimed at investigating TD-DOT applications.
Language: Английский
Citations
3
Neurophotonics, Journal Year: 2024, Volume and Issue: 11(02)
Published: May 26, 2024
Accurate spatial registration of probes (e.g., optodes and electrodes) for measurement brain activity is a crucial aspect in many neuroimaging modalities. It may increase precision enable the transition from channel-based calculations to volumetric representations.
Language: Английский
Citations
3
Scientific Data, Journal Year: 2022, Volume and Issue: 9(1)
Published: Oct. 15, 2022
The term "hyperscanning" refers to the simultaneous recording of multiple individuals' brain activity. As a methodology, hyperscanning allows investigation brain-to-brain synchrony. Despite being promising technique, there is limited number publicly available functional Near-infrared Spectroscopy (fNIRS) recordings. In this paper, we report dataset fNIRS recordings from prefrontal cortical (PFC) activity 33 mother-child dyads and 29 father-child dyads. Data was recorded while parent-child participated in an experiment with two sessions: passive video attention task free play session. Dyadic metadata, parental psychological traits, behavioural annotations sessions information about stimuli complementing signals are described. presented here can be used design, implement, test novel analysis techniques, new tools, as well investigate PFC participants different ages when they engage viewing tasks active interactive tasks.
Language: Английский
Citations
14