Browsing School of Psychology by Issue Date
Now showing items 1-20 of 229
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Synchronous information presented in 40-Hz flicker enhances visual feature binding
(Blackwell, 1998-01)Recent neurophysiological studies have encouraged speculation that the synchronization of spatially distributed neural assemblies (at around 40 Hz in the neocortex) is responsible for the binding of discrete stimulus ... -
Can we explain cross-modal representation with neural algorithms alone?: Commentary on Paillard
(North-Holland, 1999)Recent research in both psychophysics and electrophysiology has revealed a number of examples in which behaviour is guided by (i.e. Spence & Driver, 1996), and brain activity has been argued to correlate with, the formation ... -
The Politics of Housing; Social Change and Collective Action in Derry in the 1960s
(Geography Publications, 1999) -
Evidence for 40-Hz oscillatory short-term visual memory revealed by human reaction-time measurements
(American Psychological Association, 2000-05)Four experiments show that presentation of a synchronous premask frame within a 40-Hz, flickering premask matrix primes subsequent detection of a Kanizsa-type square by generation of a 40-Hz prime. Reaction time (RT) priming ... -
Enhanced GABA-A inhibition enhances synchrony coding in human perception
(Lippincott Williams & Wilkins, 2000-10-20)The benzodiazepine, lorazepam enhances the efficiency of local, inhibitory GABAA synapses in the cortex, which stabilize postsynaptic, excitatory activity by synchronizing their own discharges at around 40 Hz. Treatment ... -
The loci of oscillatory visual-object priming: a combined electroencephalographic and reaction-time study
(Elsevier, 2000-12)The detection of reaction-times (RTs) to a target Kanizsa-type square (an illusory square defined by the collinear arrangement of 90° corner junctions) within a matrix of distractor junctions are expedited when the target ... -
Modeling as part of perception: a hypothesis on the function of neural oscillations
(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 ... -
Evidence for impaired integration-segmentation processes and slowed synchrony coding in dyslexics
(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 ... -
Fechner's colors are induced by flickering monochromatic light
(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 ... -
Dynamics of perceptual grouping: similarities between the organization of visual and auditory groups
(Taylor & Francis, 2001-06)In vision, the Gestalt principles of perceptual organization are generally well understood and remain a subject of detailed analysis. However, the possibility for a unified theory of grouping across visual and auditory ... -
Effects of stimulus synchrony on mechanisms of perceptual organization
(Taylor & Francis, 2001-06-05)When neurons adopt a synchronized, oscillatory response to stimulus Gestalten, the phase of those oscillations almost always varies relative to stimulus activity. This has been taken to indicate that form-coding mechanisms ... -
Process timing and its relation to the perception of tonal harmony
(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, ... -
Prefrontal cortex and the generation of oscillatory visual persistence
(Cambridge University Press, 2003)In this commentary, the formation of ¿pre-iconic¿ visual-prime persistence is described in the context of prime-specific, independent-component activation at prefrontal and posterior EEG-recording sites. Although this ... -
Divided attention in older but not younger adults is impaired by anxiety
(Taylor and Francis, 2003)It has been hypothesized that the disruptive effects of negative emotional states, such as anxiety and depression, may contribute to poorer performance in older age. Some studies have reported that higher levels of anxiety ... -
Prefrontal cortex and the generation of oscillatory visual persistence
(Cambridge University Press, 2003-12-01)In this commentary, the formation of "pre-iconic" visual-prime persistence is described in the context of prime-specific, independent-component activation at prefrontal and posterior EEG-recording sites. Although this ... -
New measures of functional (but not perceptual) continuity in visual grouping
(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 ... -
Synchronization and stimulus timing: Implications for temporal models of visual information processing.
(Lawrence Erlbaum and Associates / Psychology Press (Taylor & Francis), 2004)In the visual system, objects and object groupings may be initially coded in terms of physically separable attributes or features, representing differential spatial frequencies, orientations, colors, directions of motion, ... -
Some effects of negative delays upon the perception of causal relatedness
(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 ... -
The visual hallucinatory response to flickering polychromatic light.
(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 ...