Modulating the attentional blink: investigations in attentional investment, conscious perception, attentional capture and visual masking
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Abstract
This thesis discusses factors that modulate the magnitude of dual-task
interference during an attentional blink task. For our purposes, dual-task interference occurs when capacity to process information is exceeded by the demands of multiple target stimuli. The factors discussed are levels of task-irrelevant 'noise' originating in peripheral regions of the visual field (Chapter 2), signal-strength of target stimuli (Chapter 3), the role of T1-masking in Lag-1 Sparing (Chapter 4), task-relevance of attention capturing stimuli (Chapter 5), and finally task-relevant feature congruence between target stimuli and backward interruption masks (Chapter 6). Chapter 7 will illustrate how Chapters 2-6, along with selected examples of previous literature, indicate that dual-task interference can be manipulated at multiple points during the time-course of AB-related processes.
interference during an attentional blink task. For our purposes, dual-task interference occurs when capacity to process information is exceeded by the demands of multiple target stimuli. The factors discussed are levels of task-irrelevant 'noise' originating in peripheral regions of the visual field (Chapter 2), signal-strength of target stimuli (Chapter 3), the role of T1-masking in Lag-1 Sparing (Chapter 4), task-relevance of attention capturing stimuli (Chapter 5), and finally task-relevant feature congruence between target stimuli and backward interruption masks (Chapter 6). Chapter 7 will illustrate how Chapters 2-6, along with selected examples of previous literature, indicate that dual-task interference can be manipulated at multiple points during the time-course of AB-related processes.
Details
| Original language | English |
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| Award date | May 2009 |