1.  28
    Neural Correlates of Object Indeterminacy in Art Compositions.Scott L. Fairhall & Alumit Ishai - 2008 - Consciousness and Cognition 17 (3):923-932.
    Indeterminate art invokes a perceptual dilemma in which apparently detailed and vivid images resist identification. We used event-related fMRI to study visual perception of representational, indeterminate and abstract paintings. We hypothesized increased activation along a gradient of posterior-to-anterior ventral visual areas with increased object resolution, and postulated that object resolution would be associated with visual imagery. Behaviorally, subjects were faster to recognize familiar objects in representational than in both indeterminate and abstract paintings. We found activation within a distributed cortical network (...)
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  2.  16
    Temporal Dynamics of Masked Word Reading.Scott L. Fairhall, Jeff P. Hamm & Ian J. Kirk - 2007 - Consciousness and Cognition 16 (1):112-123.
    The repercussions of unconscious priming on the neural correlates subsequent cognition have been explored previously. However, the neural dynamics during the unconscious processing remains largely uncharted. To assess both the complexity and temporal dynamics of unconscious cognition the present study contrasts the evoked response from classes of masked stimuli with three different levels of complexity; words, consonant strings, and blanks. The evoked response to masked word stimuli differed from both consonant strings and blanks, which did not differ from each other. (...)
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  3.  23
    Volition and the Idle Cortex: Beta Oscillatory Activity Preceding Planned and Spontaneous Movement.Scott L. Fairhall, Ian J. Kirk & Jeff P. Hamm - 2007 - Consciousness and Cognition 16 (2):221-228.
    Prior to the initiation of spontaneous movement, evoked potentials can be seen to precede awareness of the impending movement by several hundreds of milliseconds, meaning that this recorded neural activity is the result of unconscious processing. This study investigates the neural representations of impending movement with and without awareness. Specifically, the relationship between awareness and ‘idling’ cortical oscillations in the beta range was assessed. It was found that, in situations where there was awareness of the impending movement, pre-movement evoked potentials (...)
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