Now showing items 1-13 of 13

  • Defining perceptual synchrony 

    Elliott, Mark (Kijima Printing Co., 2007)
    How does neuronal activity bring about the interpretation of visual space in terms of objects or complex perceptual events? If they group, simple visual features can bring about the integration of spikes from neurons ...
  • The effects of goal-setting on feedback requests. 

    Tammemagi, Triona; O'Hora, Denis (Irish Ergonomics Society, 2012)
    Prior research suggests that performance feedback enhances the effect of a goal on performance. The current study examined the effect of goal level on feedback solicitation. Participants were exposed to five ...
  • Electrophysiological correlates of flicker-induced form hallucinations 

    Twomey, Deirdre; Glennon, Mark; Elliott, Mark (The International Society for Psychophysics, 2010-10)
    Form hallucinations can be reliably induced using temporally modulated light within a specific frequency range (15-30Hz). The neural substrates of such states have yet to be established with certainty. Brain activity of 5 ...
  • Evidence for impaired integration-segmentation processes and slowed synchrony coding in dyslexics 

    Elliott, Mark (Pabst Science Publishers, 2001)
    Using a primed figure-detection task we were able to reveal the existence of two distinct groups of dyslexics. One group is characterized by a significant impairment of visual integration-segmentation processes, resulting ...
  • Expectancy, not memory determines identical search rates in static and dynamic displays. 

    Elliott, Mark (International Society for Psychophysics, 2005)
    Search rates are often used as a measure of search efficiency. Horowitz & Wolfe employed this measure to compare static and dynamic visual search (Horowitz & Wolfe, 1998). Based on identical search rates, they argued that ...
  • Fechner's colors are induced by flickering monochromatic light 

    Elliott, Mark (Pabst Science Publishers, 2001)
    Fechner described the phenomenon of inducing illusory colors by means of rotating blackand- white disks. The induced spectral illusions were later termed "Fechner's colors". Similar color perceptions can be induced by ...
  • Modeling as part of perception: a hypothesis on the function of neural oscillations 

    Elliott, Mark (Pabst Science Publishers, 2001)
    We argue that the effectiveness of synchronization of oscillatory neural activities coding simple features, as it relates to perceptual organization, may originate in the temporal characteristics of resonance that develops ...
  • New measures of functional (but not perceptual) continuity in visual grouping 

    Elliott, Mark (International Society for Psychophysics, 2004)
    The benzodiazepine, Lorazepam enhances the efficiency of inhibitory GABA-A synapses in the cortex, which stabilize postsynaptic, excitatory activity by synchronizing their own discharges at around 40 Hz. Lorazepam treatment ...
  • Process timing and its relation to the perception of tonal harmony 

    Elliott, Mark (Editora Legis Summa Ltda, 2002)
    Recent advances in auditory research suggest that gamma-band synchronization of frequency-specific cortical loci could be responsible for the integration of pure tones (harmonics) into harmonic complex tones. Thus far, ...
  • Some effects of negative delays upon the perception of causal relatedness 

    Elliott, Mark (The International Society for Psychophysics, 2004)
    We examined the effects of negative delays on the perception of causality using a variation of the paradigm originated by Michotte (1954) and as an extension to similar work conducted by Kanizsa and Vicario (1968). In our ...
  • Structural imbalance and aesthetic preference in domestic chicks 

    Mulcahy, Paul; Elliott, Mark (The International Society for Psychophysics, 2010-10)
    In Arnheim¿s (1954/1974) theory of structural balance, an image is more aesthetically pleasing when it demonstrates balance between multiple internal sources of directed perceptual force. Areas of balance and preferred ...
  • Temporal structure and inner psychophysics: A glimpse of equilibrium? 

    Elliott, Mark (The International Society for Psychophysics, 2010-10)
    It has been suggested that the synchronization of spatially distributed neural assemblies at fast frequencies in the range 20 - 80 Hz (the ¿gamma¿ band) is instrumental for binding the separate feature-elements of a figure ...
  • The visual hallucinatory response to flickering polychromatic light. 

    Elliott, Mark (The International Society for Psychophysics, 2004)
    Our understanding of human visual perception generally rests on the assumption that conscious visual states represent, in some qualitative fashion, a complex interaction between spatially structured variations in the ambient ...