Is Visual Stimuli Neighboring Attended Stimuli Suppressedin High Perceptual Load?: A Steady State Evoked Potential Study
Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesisAlternative title
Kan visuellt distraktor-stimuli påverkas av perceptuell belastning? (Swedish)
Perceptual load theory, together with the surround-suppression model suggest that stimulus surrounding attended stimuli is suppressed, especially if perceptual load is high. This study attempts to map surround-suppression using electroencephalography to measure neural activity related to suppression at four surrounding locations (2°, 3°, 4° and 6° from fixation). Color and orientation was used to manipulate load, and the effect of load was controlled through behavioral and neural measures using event related potentials. Our results demonstrate no statistically supported effect of load in behavioral data or SSVEP data, but unexplained increased neural amplitude of an early visual component (i.e. N1) in the (hypothesized) low load condition.
Place, publisher, year, edition, pages
2016. , 25 p.
Neurosciences Social Sciences Interdisciplinary Psychology
IdentifiersURN: urn:nbn:se:liu:diva-130907ISRN: LIU-IDA/KOGVET-G--16/017—SEOAI: oai:DiVA.org:liu-130907DiVA: diva2:956551
Subject / course
Signoret, CarineWiens, Stefan