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Title: Temporal discrimination and integration in visual pattern perception
Author: Fraser, Ian Hamilton
ISNI:       0000 0001 3483 4255
Awarding Body: University of Aberdeen
Current Institution: University of Aberdeen
Date of Award: 1986
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The literature on models of pattern recognition was reviewed and it was revealed that there is a paucity of information concerning temporal factors and their effects on pattern perception. A method for ivestigating these aspects was outlined which entails the fragmentation of a stimulus and its presentation over time. This type of stimulus presentation has revealed that the visual system appears to harbour biases towards parsing the internal or external features from the outline. In addition there were perceptual advantages in terms of processing speed and fewer errors when the outline occurred first in the sequence of stimulus fragments. Both of these biases appear strongest when meaningful as opposed to non-representational stimuli are used. It was concluded that these results can be best explained in terms of a two stage processing model. The first stage involves a process of building up an internal representation (much along the lines of David Marr's model). The second stage involves a cognitively driven scanning process which compares the representation with the items in the subject's picture vocabulary. This scanning process is probably hierarchically organised.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Psychology