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Typus
Verschleierung
Bearbeiter
Hindemith
Gesichtet
Yes.png
Untersuchte Arbeit:
Seite: 71, Zeilen: 1-10
Quelle: Scanlon et al 2006
Seite(n): 5, 6, Zeilen: 5: 3rd col: last line; 6: 1st col: 1ff
The time-course of processing in the cortex may be seen with millisecond accuracy. In this particular facet of functional brain activity recording, ERPs are considerably superior to the other major techniques available such as Positron Emission Tomography (PET) and functional Magnetic Resonance Imaging (fMRI). Both of these imaging techniques are constructed upon the concept that increased cognitive processing in an area of cortex requires increased regional cerebral blood flow (rCBF) to support the local energetic demands of the tissue for nutrients and oxygen. There is a significant time-lag involved in such approaches, due to the relatively slow speed at which blood flows through the brain (in comparison to electrical impulses). Also, a blocked design must be used in most imaging studies, such that a real-time record of processing cannot be obtained. The time-course of processing in the cortex

[page 6]

may be seen with millisecond accuracy. In this facet of functional brain activity recording, ERPs is considerably superior to the other major options available, Positron Emission Tomography (PET) and functional Magnetic Resonance Imaging (fMRI). Both of these imaging techniques rely on the idea that increased cognitive processing in an area of cortex requires increased regional cerebral blood flow (rCBF) to support the local energetic demands of the tissue for nutrients and oxygen. There is a significant time-lag involved in such approaches, due to the relatively slow speed at which blood flows through the brain (in comparison to electrical impulses). Also, a blocked design must be used in most imaging studies, so a real-time record of processing cannot be obtained.

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Sichter
(Hindemith) Agrippina1

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