检索结果-南通市图书馆

PHASE DIFFERENCE BETWEEN LOW-FREQUENCY OSCILLATIONS OF CEREBRAL DEOXY-AND OXY-HEMOGLOBIN CONCENTRATIONS DURING A MENTAL TASK

引用

Journal of Innovative Optical Health Sciences 2011年第2期4卷 151-158页

作者： ANGELO SASSAROLI FENG ZHENG michele pierro PETER R.BERGETHON SERGIO FANTINI Department of Biomedical Engineering Tufts University 4 Colby StreetMedfordMA 02155USA

Hemodynamic low-frequency(~0.1 Hz)spontaneous oscillations as detected in the brain by nearinfrared spectroscopy have potential applications in the study of brain activation,cerebral autoregulation,and functional connectivity.In this work,we have investigated the phase lag between oscillations of cerebral deoxy-and oxy-hemoglobin concentrations in the frequency range 0.05-0.10 Hz in a human subject during a mental workload task.We have obtained a measure of such phase lag using two different methods:(1)phase synchronization analysis as used in the theory of chaotic oscillators and(2)a novel cross-correlation phasor approach.The two methods yielded comparable initial results of a larger phase lag between low-frequency oscillations of deoxy-and oxyhemoglobin concentrations during mental workload with respect to a control,rest condition.

关键词： Phase lag oxyhemoglobin deoxyhemoglobin phase synchronization cross-correlation phasor LFO

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

COHERENT HEMODYNAMICS SPECTROSCOPY BASED ON A PACED BREATHING PARADIGM-REVISITED

引用

Journal of Innovative Optical Health Sciences 2014年第1期7卷 91-99页

作者： JANA M.KAINERSTORFER ANGELO SASSAROLI michele L.pierro BERTAN HALLACOGLU SER.GIO FANTINI Department of Biomedical Engineering Tufts University 4 ColbyStreetMedfordMA 02155USA

A novel hemodynamic model has been recently introduced,which provides analytical relation-ships between the changes in cerebral blood volume(CBV),cerebral blood flow(CBF),andcerebral metabolic rate of oxy gen(CMRO2),and associat ed changes in the tissue concentrationsof oxy-and deoxy-hemoglobin(AO and AD)measured with near-infrared,spectroscopy(NIRS)[S.Fantini,Neuroimage 85,202-221(2014)].This novel model can be applied tomeasurements of the amplit ude and phase of induced hemodynamic oscillations as a function ofthe frequency of oscillation,realizing the novel technique of coherent hemodynamics spectroscopy(CHS)[S.Fantini,Neuroimage 85,202-221(2014);M.L.pierro et al.,Neuroimage 85,222-233(2014)]:In a previous work,,we have demonstrated an in vivo application of CiHS on hunanSubjects during paced breat hing[M.L.pierro et al,Neuroimage 85,222-233(2014)].In thiswork,we present a new analysis of the collected data duringpaced breat hing based on a slightlyrevised formulation of the hemodynamic model and ann efficient fitting procedure.While we haveinitially treated all 12 model parameindeependent,we have found that,in this new in-plementation of CHS,the number of independent is eight.In this article,we identifythe eight independent model parameters and,we show that our previous results are consistentwith the new formulation,once the individual parameters of the earlier analysis are combinedinto the new set of independent parameters.

关键词： Hemodynamic model near-infrared spectroscopy cerebral autoregulation cerebralblood flow metabolic rate of oxygen.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A high-density, multi-parental SNP genetic map on apple validates a new mapping approach for outcrossing species

引用

Horticulture Research 2016年第1期3卷 30-42页

作者： Erica A Di pierro Luca Gianfranceschi Mario Di Guardo Herma JJ Koehorst-van Putten Johannes W Kruisselbrink Sara Longhi Michela Troggio Luca Bianco Hélène Muranty Giulia Pagliarani Stefano Tartarini Thomas Letschka Lidia Lozano Luis Larisa Garkava-Gustavsson Diego micheletti Marco CAM Bink Roeland E Voorrips Ebrahimi Aziz Riccardo Velasco François Laurens W Eric van de Weg Department of Biosciences University of MilanMilan20133Italy Plant Breeding Wageningen University and ResearchWageningen6700AJThe Netherlands Research and Innovation Centre Edmund Mach FoundationSan Michele all’Adige38010Italy Biometris Wageningen University and ResearchWageningen6700AAThe Netherlands IRHS INRAAGROCAMPUS-OuestUniversitéd’AngersSFR 4207 QUASAVBeaucouzé49071France Department of Agricultural Sciences University of BolognaBologna40127Italy Department of Molecular Biology Laimburg Research Centre for Agriculture and ForestryOra39040Italy Department of Plant Breeding Swedish University of Agricultural SciencesAlnarp23053Sweden Hendrix Genetics Research Technology&ServicesBoxmeer 5830 ACThe Netherlands

Quantitative trait loci(QTL)mapping approaches rely on the correct ordering of molecular markers along the chromosomes,which can be obtained from genetic linkage maps or a reference genome sequence.For apple(Malus domestica Borkh),the genome sequence v1 and v2 could not meet this need;therefore,a novel approach was devised to develop a dense genetic linkage map,providing the most reliable marker-loci order for the highest possible number of markers.The approach was based on four strategies:(i)the use of multiple full-sib families,(ii)the reduction of missing information through the use of HaploBlocks and alternative calling procedures for single-nucleotide polymorphism(SNP)markers,(iii)the construction of a single backcross-type data set including all families,and(iv)a two-step map generation procedure based on the sequential inclusion of markers.The map comprises 15417 SNP markers,clustered in 3 K HaploBlock markers spanning 1267 cM,with an average distance between adjacent markers of 0.37 cM and a maximum distance of 3.29 cM.Moreover,chromosome 5 was oriented according to its homoeologous chromosome 10.This map was useful to improve the apple genome sequence,design the Axiom Apple 480 K SNP array and perform multifamily-based QTL studies.Its collinearity with the genome sequences v1 and v3 are reported.To our knowledge,this is the shortest published SNP map in apple,while including the largest number of markers,families and individuals.This result validates our methodology,proving its value for the construction of integrated linkage maps for any outbreeding species.

关键词： breeding linkage mapping

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：