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dc.contributor.authorBridge, T.
dc.date.accessioned2019-05-15T10:24:16Z
dc.date.available2019-05-15T10:24:16Z
dc.date.issued2012
dc.identifier.citation

Bridge, T. (2012) 'Measuring the haemodynamic responses elicited in the visual cortex from various spatial and temporal frequencies using NIRS', The Plymouth Student Scientist, 5(1), p. 94-118.

en_US
dc.identifier.issn1754-2383
dc.identifier.urihttp://hdl.handle.net/10026.1/13968
dc.description.abstract

Previous research has found the optimum spatial and temporal frequency of a stimulus can elicit peak activation in the visual cortex. In this study eight participants looked at bullseye gratings with low and high spatial frequencies (0.5 & 3 c/deg) at varying temporal frequencies (1, 4, 8 & 30Hz). Their haemoglobin response in the visual cortex was recorded using Near Infra-red Spectroscopy (NIRS). Insignificant results were found in all measures, including oxygenated haemoglobin which reported F (1, 8, 5.63) = .75, p<.44. Trigonometric regression did illustrate increased visual activation when the bullseye grating was presented. It appears different frequencies can cause different haemodynamic response, but a larger sample and the elimination of disadvantages in NIRS is required to obtain significance.

en_US
dc.language.isoenen_US
dc.publisherUniversity of Plymouth
dc.rightsAttribution 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/*
dc.subjectspatial frequencyen_US
dc.subjecttemporal frequenciesen_US
dc.subjectstimulusen_US
dc.subjecthaemoglobin responseen_US
dc.subjectvisual cortexen_US
dc.subjectNear Infra-red Spectroscopyen_US
dc.titleMeasuring the haemodynamic responses elicited in the visual cortex from various spatial and temporal frequencies using NIRSen_US
dc.typeArticle
plymouth.issue1
plymouth.volume5
plymouth.journalThe Plymouth Student Scientist


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Attribution 3.0 United States
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