Abstract：
:We have previously reported changes in the concentrations of oxy-(delta[HbO2]) deoxy- (delta[HHb]) and total haemoglobin (delta[HbT] = delta[HbO2] + delta[HHb]) measured using near infrared spectroscopy (NIRS) over the frontal cortex (FC) during an anagram solving task. These changes were associated with a significant increase in both mean blood pressure (MBP) and heart rate (HR). The aim of this study was to investigate whether the changes in MBP previously recorded during an anagram solving task produces associated changes in scalp blood flow (flux) measured by laser Doppler and whether any changes are seen in NIRS haemodynamic measurements over a control region of the brain (motor cortex: MC). During the 4-Letter anagram task significant changes were observed in the delta[HbO2], delta[HHb] and delta[HbT] in both the frontal and motor cortex (n = 11, FC p < 0.01, MC p < 0.01). These changes were accompanied by significant changes in both MBP (n = 11, p < 0.01) and scalp flux (n = 9, p = 0.01). During the 7-Letter anagram task significant changes were observed in the delta[HbO2] and delta[HbT] (n = 11, FC p < 0.01, MC p < 0.01), which were accompanied by significant changes in both MBP (n = 11, p = 0.05) and flux (n = 9, p = 0.05). The task-related changes seen in MBP and flux in this study appear to contribute to the changes in the NIRS signals over both the activated and control regions of the cortex.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Tachtsidis I,Leung TS,Tisdall MM,Devendra P,Smith M,Delpy DT,Elwell CEdoi
10.1007/978-0-387-74911-2_3subject
Has Abstractpub_date
2008-01-01 00:00:00pages
21-8eissn
0065-2598issn
2214-8019journal_volume
614pub_type
杂志文章abstract：:We describe an investigation into how Massey University's Pollen Classifynder can accelerate the understanding of pollen and its role in nature. The Classifynder is an imaging microscopy system that can locate, image and classify slide based pollen samples. Given the laboriousness of purely manual image acquisition an...
journal_title：Advances in experimental medicine and biology
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journal_title：Advances in experimental medicine and biology
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abstract：:The primary goal of this project was to elucidate the spatial pattern of capillaries in three hamster striated muscles according to statistical techniques of pattern analysis. The spatial pattern of capillaries and traditional measures of capillarity are important to understanding the supply and distribution of oxygen...
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abstract：:In order to better understand the mechanisms of cerebrovascular development and differentiation, the leptomeningeal microcirculation was analyzed using in vivo fluorescence video-microscopy in neonatal (1, 9, and 12 day old) Sprague-Dawley rats. The pattern of flow distribution was reconstructed, the location of radia...
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journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4614-4989-8_24
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journal_title：Advances in experimental medicine and biology
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abstract：:Long before the RNA degrading exosome was first described in the yeast Saccharomyces cerevisiae, the use of autoantibodies found in the sera of certain autoimmune patients allowed the identification of a complex of polypeptides which later appeared to be the human exosome. Today, the most extensively documented associ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：
更新日期：2010-01-01 00:00:00
