Assessment of Resting-State Blood Flow Through Anterior Cerebral Arteries Using Trans-cranial Doppler Recordings

Huang, Hanrui; Sejdić, Ervin

doi:10.1016/j.ultrasmedbio.2013.06.016

Cited by 3 publications

(7 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several parameters were calculated to characterize the hemodynamic signals from different perspectives: time, frequency, time-frequency and information theory [22,24]. The specific parameters are described below.…”

Section: Methodsmentioning

confidence: 99%

“…The frequency features that were calculated included peak frequency (PeakFreq), centroid frequency (CentFreq), bandwidth (BW) [22,24,43] and spectral power in different frequency bands. Power Spectral Density (PSD) was calculated using the Welch method with a Hamming window of 1024 points and a 50% overlap.…”

Section: Methodsmentioning

confidence: 99%

“…Besides, there are recent studies that have evaluated the resting-state CBFV signal from the MCA [22] and the ACA [23,24] in general population, using not only the envelope velocity but also the raw TCD signal. The raw signal is the ultrasound signal that is received by the TCD monitoring system without any processing.…”

Section: Introductionmentioning

confidence: 99%

“…The studies about resting-state categorization of CBFV in general population [22–24] have also proposed the use of features extracted from both the raw and the envelope signals using not only temporal analyses, but also frequency, time-frequency and information theory analyses. These features can contribute to a better characterization of the CBFV signals in different groups of people or different experimental conditions, complementing typical approaches based on analyzing the temporal evolution of the signals.…”

Section: Introductionmentioning

confidence: 99%

“…These features can contribute to a better characterization of the CBFV signals in different groups of people or different experimental conditions, complementing typical approaches based on analyzing the temporal evolution of the signals. Sejdić et al [22] and Huang et al [24] observed sex-based differences in parameters from the three additional domains both for the envelope signals and the raw CBFV signals from MCA and ACA vessels.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Altered cerebral blood flow velocity features in fibromyalgia patients in resting-state conditions

et al. 2017

View full text Add to dashboard Cite

The aim of this study is to characterize in resting-state conditions the cerebral blood flow velocity (CBFV) signals of fibromyalgia patients. The anterior and middle cerebral arteries of both hemispheres from 15 women with fibromyalgia and 15 healthy women were monitored using Transcranial Doppler (TCD) during a 5-minute eyes-closed resting period. Several signal processing methods based on time, information theory, frequency and time-frequency analyses were used in order to extract different features to characterize the CBFV signals in the different vessels. Main results indicated that, in comparison with control subjects, fibromyalgia patients showed a higher complexity of the envelope CBFV and a different distribution of the power spectral density. In addition, it has been observed that complexity and spectral features show correlations with clinical pain parameters and emotional factors. The characterization features were used in a lineal model to discriminate between fibromyalgia patients and healthy controls, providing a high accuracy. These findings indicate that CBFV signals, specifically their complexity and spectral characteristics, contain information that may be relevant for the assessment of fibromyalgia patients in resting-state conditions.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Altered cerebral blood flow velocity features in fibromyalgia patients in resting-state conditions

et al. 2017

View full text Add to dashboard Cite

show abstract

Human handedness: A meta-analysis.

Παπαδάτου-Παστού¹,

Ntolka²,

Schmitz³

et al. 2020

Psychological Bulletin

295

191

View full text Add to dashboard Cite

Across time and place, right hand preference has been the norm, but what is the precise prevalence of left-and right-handedness? Frequency of left-handedness has shaped and underpinned different fields of research, from cognitive neuroscience to human evolution, but reliable distributional estimates are still lacking. While hundreds of empirical studies have assessed handedness, a large-scale, comprehensive review of the prevalence of handedness and the factors which moderate it, is currently missing. Here, we report five meta-analyses on hand preference for different manual tasks and show that left-handedness prevalence lies between 9.3% (using the most stringent criterion of left-handedness) to 18.1% (using the most lenient criterion of non-right-handedness), with the best overall estimate being 10.6% (10.4% when excluding studies assessing elite athletes' handedness). Handedness variability depends on (a) study characteristics, namely year of publication and ways to measure and classify handedness, and (b) participant characteristics, namely sex and ancestry. Our analysis identifies the role of moderators which require taking into account in future studies on handedness and hemispheric asymmetries. We argue that the same evolutionary mechanisms should apply across geographical regions to maintain the roughly 1:10 ratio, while cultural factors, such as pressure against left-hand use, moderate the magnitude of the prevalence of left-handedness. Although handedness appears as a straightforward trait, there is no universal agreement on how to assess it. Therefore, we urge researchers to fully report study and participant characteristics as well as the detailed procedure by which handedness was assessed and make raw data publicly available.

show abstract

Cognitive tasks and cerebral blood flow through anterior cerebral arteries: a study via functional transcranial Doppler ultrasound recordings

2016

Self Cite

View full text Add to dashboard Cite

BackgroundFunctional transcanial Doppler ultrasound (fTCD) is a convenient approach to examine cerebral blood flow velocity (CBFV) in major cerebral arteries.MethodsIn this study, the anterior cerebral artery (ACA) was insonated on both sides, that is, right ACA (R-ACA) and left ACA (L-ACA). The envelope signals (the maximum velocity) and the raw signals were analyzed during cognitive processes, i.e. word-generation tasks, geometric tasks and resting state periods separating each task. Data which were collected from 20 healthy participants were used to investigate the changes and the hemispheric functioning while performing cognitive tasks. Signal characteristics were analyzed in time domain, frequency domain and time-frequency domain.ResultsSignificant results have been obtained through the use of both classic/modern methods (i.e. envelope/raw, time and frequency/information-theoretic and time-frequency domains). The frequency features extracted from the raw signals highlighted sex effects on cerebral blood flow which revealed distinct brain response during each process and during resting periods. In the time-frequency analysis, the distribution of wavelet energies on the envelope signals moved around the low frequencies during mental processes and did not experience any lateralization during cognitive tasks.ConclusionsEven if no lateralization effects were noticed during resting-state, verbal and geometric tasks, understanding CBFV in ACA during cognitive tasks could complement information extracted from cerebral blood flow in middle cerebral arteries during similar cognitive tasks (i.e. sex effects).

show abstract

Assessment of Resting-State Blood Flow Through Anterior Cerebral Arteries Using Trans-cranial Doppler Recordings

Cited by 3 publications

References 48 publications

Altered cerebral blood flow velocity features in fibromyalgia patients in resting-state conditions

Altered cerebral blood flow velocity features in fibromyalgia patients in resting-state conditions

Human handedness: A meta-analysis.

Cognitive tasks and cerebral blood flow through anterior cerebral arteries: a study via functional transcranial Doppler ultrasound recordings

Contact Info

Product

Resources

About