Electrophysiological Correlates of Processing Unattended Objects in Visual Cognition

PhD Thesis


Wakui, E. 2014. Electrophysiological Correlates of Processing Unattended Objects in Visual Cognition. PhD Thesis University of East London School of Psychology
AuthorsWakui, E.
TypePhD Thesis
Abstract

Research is divided as to what degree visually unattended objects are processed (Lachter et al., 2008; Carrasco, 2011). The hybrid model of object recognition (Hummel, 2001) predicts that familiar objects are automatically recognised without attention. However under perceptual load theory (Lavie, 1995), when objects are rendered unattended due to exhausted attentional resources, they are not processed.
The present work examined the visual processing of images of everyday objects in a short-lag repetition-priming paradigm. In Experiments 1-3 attention was cued to the location of one of two objects in the first (prime) display, with the unattended sometimes repeated in the second (probe) display. ERP repetition effects were observed which were insensitive to changes in scale (Experiment 1) but sensitive to slight scrambling of the
image (Experiment 2). Increasing perceptual load did not modulate these view-specific repetition effects (Experiment 3), consistent with the predictions of automatic holistic processing. In Experiments 4-7 a letter search task was used to render the flanking object image unattended under high load. In Experiment 5 distractor processing was observed in ERP even under high load. In Experiments 4, 6 and 7 a pattern of view sensitive/insensitive and load sensitive/insensitive repetition effects on RT (Experiment 4) and ERP amplitude (Experiments 6, 7) were observed that were difficult to interpret
under either the hybrid model or perceptual load theory, but may reflect fast view-based and slow view-independent processing of objects.
Overall, the properties of the view-sensitive repetition effects were generally consistent with those associated with the automatic/pre-attentive processing of the holistic route of the hybrid model. However, differences between the processing of objects rendered unattended via a spatial cue or perceptual load indicate that the bottom-up driven hybrid model and perceptual load theory may benefit from the consideration of the interaction of top-down biasing of processing (Tsotsos et al., 2008).

Year2014
Digital Object Identifier (DOI)doi:10.15123/PUB.4148
Publication dates
PrintSep 2014
Publication process dates
Deposited01 May 2015
Publisher's version
License
CC BY-NC-ND
Permalink -

https://repository.uel.ac.uk/item/8592q

  • 8
    total views
  • 4
    total downloads
  • 3
    views this month
  • 1
    downloads this month

Related outputs

Late development of metric part-relational processing in object recognition.
Jüttner, Martin, Petters, Dean, Wakui, E. and Davidoff, Jules 2014. Late development of metric part-relational processing in object recognition. Journal of Experimental Psychology: Human Perception and Performance. 40 (4), pp. 1718-1734.
View-sensitive ERP repetition effects indicate automatic holistic processing of spatially unattended objects
Wakui, E., Thoma, V. and de Fockert, Jan W. 2016. View-sensitive ERP repetition effects indicate automatic holistic processing of spatially unattended objects. Neuropsychologia. 89, pp. 426-436.
Developmental Commonalities between Object and Face Recognition in Adolescence
Jüttner, Martin, Wakui, E., Petters, Dean and Davidoff, Jules 2016. Developmental Commonalities between Object and Face Recognition in Adolescence. Frontiers in Psychology. 7 (385).
Developmental commonalities between object and face recognition in adolescence
Juttner, M. C., Wakui, E., Petters, D. A. and Davidoff, J. 2016. Developmental commonalities between object and face recognition in adolescence. Frontiers in Psychology. 7 (385).
How different are the visual representations used for object recognition in middle childhood and adulthood?
Petters, D. A., Hummel, J. B., Juttner, M. C., Wakui, E. and Davidoff, J. E. 2014. How different are the visual representations used for object recognition in middle childhood and adulthood? 50th Annual Convention of the Society for the Study of Artificial Intelligence and the Simulation of Behaviour , AISB 2014. Goldsmiths College, London 01 - 04 Apr 2014