Impact of inaccurate knowledge of experimental stimulus time-course on GLM fMRI analysis
MIKL, Michal, Aleš DRASTICH, Petr HLUŠTÍK, Radek MAREČEK and Milan BRÁZDIL. Impact of inaccurate knowledge of experimental stimulus time-course on GLM fMRI analysis. 2007. ISSN 1053-8119. |
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Basic information | |
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Original name | Impact of inaccurate knowledge of experimental stimulus time-course on GLM fMRI analysis |
Name in Czech | Vliv nepřesné znalosti průběhu experimentální stimulace na výsledky analýzy fMRI pomocí GLM |
Authors | MIKL, Michal (203 Czech Republic, guarantor), Aleš DRASTICH (203 Czech Republic), Petr HLUŠTÍK (203 Czech Republic), Radek MAREČEK (203 Czech Republic) and Milan BRÁZDIL (203 Czech Republic). |
Edition | 2007. |
Other information | |
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Original language | English |
Type of outcome | Conference abstract |
Field of Study | 30000 3. Medical and Health Sciences |
Country of publisher | United States of America |
Confidentiality degree | is not subject to a state or trade secret |
Impact factor | Impact factor: 5.457 |
RIV identification code | RIV/00216224:14110/07:00025696 |
Organization unit | Faculty of Medicine |
ISSN | 1053-8119 |
Keywords in English | fMRI; general linear model; inaccuracy; stimulus time-course |
Tags | fMRI, general linear model, inaccuracy, stimulus time-course |
Tags | International impact |
Changed by | Changed by: Ing. Michal Mikl, Ph.D., učo 133966. Changed: 25/3/2010 08:41. |
Abstract |
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In functional magnetic resonance imaging (fMRI), detection of activation is often realized using the general linear model (GLM). The measured signal is modeled using convolution of stimulus time-course and hemodynamic response function (HRF). Both accurate knowledge of experimental stimulus time-course and accurate knowledge of HRF are necessary to obtain valid and meaningful results. The aim of this work is to find how much the results depend on inaccurate knowledge of stimulus time-course |
Abstract (in Czech) |
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Ve funkční magnetické rezonanci (fMRI) využíváme obvykle k detekci aktivace obecného lineárního modelu (GLM). Měený signál je modelován na základě konvoluce impulsní odezvy hemodynamiky (HRF) a časového průběhu experimentální stimulace. Přesná znalost obojího je nutná k získání validních výsledků. Cílem práce je ohodnotit, jak nepřesná znalost časového průběhu stimulace ovlivní výsledky fMRI analýzy využívající GLM. |
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MSM0021622404, plan (intention) | Name: Vnitřní organizace a neurobiologické mechanismy funkčních systémů CNS |
Investor: Ministry of Education, Youth and Sports of the CR, The internal organisation and neurobiological mechanisms of functional CNS systems under normal and pathological conditions. |
PrintDisplayed: 6/10/2024 08:30