Vai al contenuto| Home page|

   Ti trovi in: HOME »Programmi, progetti e risultati »I progetti »PRIN - Programmi di ricerca di Rilevante Interesse Nazionale»Programma di ricerca
INIZIO_TESTO_DA_INDICIZZARE

RESEARCH PROGRAM

italiano - inglese
Research Units
Similar research programs:
Scientific and education field classification
Geographical classification
Bibliografia
Bravo, M.J., & Nakayama, K. (1992). The role of attention in different visual-search tasks. Perception & Psychophysics, 51, 465-472.

Corbetta, M. (1998). A common neural system to direct attention and the eye to visual locations. Proceedings of the National Academy of Science USA, 95, 831-838.

Dell'Acqua, R., & Jolicoeur, P. (2000). Visual encoding of patterns is subject to dual-task interference. Memory and Cognition, 28, 184-191.

Dell'Acqua, R., Jolicoeur, P., Pesciarelli, F., Job, R., & Palomba, D. (2003). Electrophysiological evidence of visual encoding deficits in a crossmodal attentional blink paradigm. Psychophysiology, 40, 629-639.

Dell'Acqua, R., Jolicoeur, P., Sessa, P., & Turatto, M. (2005). Attentional blink and selection in the tactile domain. European Journal of Cognitive Psychology. In press.

Desimone R. (1996). Neural mechanisms for visual memory and their role in attention. Proceedings of the National Academy of Science USA, 93, 13494-13499.

Desimone, R., & Duncan, J. (1995). Neural mechanisms of selective visual attention. Annual Review of Neuroscience, 18, 193-222.

Donchin, E., & Coles, M. G. H. (1988). Is the P300 component a manifestation of context updating? Behavioral and Brain Sciences, 11, 355-372.

Downing, P.E. (2000). Interactions between visual working memory and selective attention. Psychological Science, 11, 467-473.

Engbert, R., & Kliegl, R. (2003). Microsaccades uncover the orientation of covert attention. Vision Research, 43, 1035-1045.

Eriksen, C.W. & St. James, J.D. (1986). Visual attention within and around the field of focal attention: a zoom lens model. Perception and Psychophysics, 40, 225-240.

Findlay, J.M. & Gilchrist, I.D. (2003). Active vision. Oxford: Oxford University Press.

Galfano, G., Betta, E., & Turatto, M. (2004). Inhibition of return in microsaccades. Experimental Brain Research, 155, 400-404.

Hafed, Z.M. & Clark, J.J. (2002). Microsaccades as an overt measure of covert attention shifts. Vision Research, 42, 2533-2545.

Hoffman, J.E., & Subramaniam, B. (1995). The role of visual attention in saccadic eye movements. Perception and Psychophysics, 57, 787-795.

Husain, M., Shapiro, K., Martin, J., & Kennard, C. (1997). Abnormal temporal dynamics of visual attention in spatial neglect patients. Nature, 385, 154-157.

Jolicoeur, P., & Dell'Acqua, R. (1998). The demonstration of short-term consolidation. Cognitive Psychology, 36, 138-202.

Lavie, N. (1995). Perceptual load as a necessary condition for selective attention. Journal of Experimental Psychology: Human Perception and Performance, 21, 451-468.

Luck, S.J. (1998). Neurophysiology of selective attention. In H. Pashler (Ed.), Attention (pp. 257-295). Hove, UK: Psychology Press.

Luck, S.J., & Vogel, E.K. (1997). The capacity of visual working memory for features and features conjuctions. Nature, 390, 279-281.

Naatanen, R. (1982). Processing negativity: An evoked-potential reflection of selective attention. Psychological Bulletin, 92, 605-640.

Pashler, H., & Johnston, J.C. (1998). Attentional limitations in dual-task performance. In H. Pashler (Ed.), Attention (pp. 155-189). Hove, UK: Psychology Press.

Phillips, W.A. (1974). On the distinction between sensory storage and short-term visual memory. Perception and Psychophysics, 16, 283-290.

Posner, M. I. & Cohen, Y. (1984). Components of visual orienting. In H. Bouma & D. G. Bouwhuis (Eds.), Attention and Performance X (pp. 531-556). Hillsdale, NJ: Erlbaum.

Raymond, J.E., Shapiro, K.L., & Arnell, K.M. (1992). Temporary suppression of visual processing in an RSVP task: An attentional blink? Journal of Experimental Psychology: Human Perception and Performance, 18, 849-860.

Ro, T., Pratt, J., & Rafal, R.D. (2000). Inhibition of return in saccadic eye movements. Experimental Brain Research, 130, 264-268.

Sheliga, B.M., Riggio, L., Craighero, L., & Rizzolatti, G. (1995). Spatial attention-determined modifications in saccade trajectories. Neuroreport, 6, 585-588.

Shepherd, M., Findlay, J.M., & Hockey, G.R.J. (1986). The relationship between eye movements and spatial attention. Quarterly Journal of Experimental Psychology, 38A, 475-491.

Soto, D., Heinke, D., Humphreys, G.W., & Blanco, M.J. (2005). Early, involuntary top-down guidance of attention from working memory. Journal of Experimental Psychology: Human Perception and Performance, 31, 248-261.

Theeuwes, J., Kramer, A.F., Hahn, S., & Irwin, D.E. (1998). Our eyes do not always go where we want them to go: capture of the eyes by new objects. Psychological Science, 9, 379-385.

Valsecchi, M., Betta, E., & Turatto, M. (2006). Visual oddballs induce prolonged microsaccadic suppression. Submitted manuscript.

Vogel, E.K., Luck, S.J., & Shapiro, K.L. (1998). Electrophysiological evidence for a postperceptual locus of suppression during the attentional blink. Journal of Experimental Psychology: Human Perception and Performance, 24, 1656-1674.
Welford, A.T. (1952). The "psychological refractory period" and the timing of high speed performance-A review and theory. British Journal of Psychology, 43, 2-1.

Yantis, S., & Jonides, J. (1990). Abrupt visual onsets and selective attention: Voluntary versus automatic allocation. Journal of Experimental Psychology: Human Perception and Performance, 16, 121-134.
Keywords
ATTENTION, COGNITIVE ARCHITECTURES, COGNITIVE ELECTROPHYSIOLOGY, COGNITIVE NEUROPSYCHOLOGY, EYE MOVEMENTS, DUAL-TASK PARADIGMS

The spatio-temporal boundaries of attention in neurologically intact and impaired human adults

Università degli Studi di Padova
Abstract
People are not ordinarily aware that their immediate perceptual experience is the result of a continuous constructive operation performed by the brain on the information coming through different senses. The cognitive system can select relevant information by means of attention and short-term memory processes with limited resources. Practically all daily activities entail to some extent a form of integration of cross-modal information and efficient selction of relevant information. Extracting information from the complex environment around us often requires not only attentional orienting, but also shifting the eyes towards the object of interest. The sections that follow illustrate in detail the many-fold scope of the present research project, that starts off with a series of methodological observations on the experimental designs held to be most suited to understanding the complex interactions between attention mechanisms, mechanisms involved in cross-modal information processing, and attention processes related to oculomotor behavior. On the one hand, the argument will lead us to consider a family of paradigms, relying on the logic of causing artificially controlled, but nevertheless dramatic performance failures in perception, in order to test a set of hypotheses about the functional and electrophysiological properties of the mechanisms enabling cross-modal information processing and awareness in humans. Using the attentional blink (or AB) paradigm and the psychological >>>

Principal Investigator
Roberto Dell'acqua Università degli Studi di PADOVA
Research Objectives
In popular belief, a collision between concrete entities is associated in most cases with a plethora of negative consequences. When the entities are two cars moving in an opposite direction on a highway, for instance, the negative consequences of a collision stand out with immediacy in our immagination. In sharp contrast with this belief, however, a collision between entities is an event that in all fields of science can provide new insights into the nature of the phenomenon of interest. For example, in physics, a collision occurring inside a particle accelerator constitutes the only avenue to discovery of new subparticles. Similarly, in psychology and cognitive neuroscience, a collision between mental events can help shed light on the functional architecture of the human mind and its neural substrate, an amazingly fault-proof system that remains largely unexplained. Through the experiments described in the present research project, we seek to reproduce psychological conditions apt to yield a collision between mental events, to shed new light on critical aspects of our cognitive system. The two units will be involved in a joint effort devoted to investigate the role of attention in controlling the access to awareness of different stimuli, their multisensory integration, as well as the role of attention and working memory (WM) in modulating oculomotor activity. As will be made clear in the forthcoming sections, as well as in each of the specific synergic proposals put forth >>>

Timescale
24 months
National and international background
Humans are constantly exposed to a multi-sensory environment in which a large amount of stimuli simultaneously reach the brain that exceed the capacity of our cognitive system. Hence,
investigating the conditions under which the human brain is unable to process this multi-sensory input has fascinated experimental psychologists since the foundation of psychological science. A different, although strongly related, hot topic in cognitive psychology and neuroscience deals with the investigation of the mechanisms that ensure efficient orienting of attention towards task-relevant stimuli in the environment and how these processes interact with the oculomotor system. The starting point of the present research project originates from two different, although strongly related, research fields. In the next paragraphs, the fields related to the two units composing our research group will be briefly summarized and discussed, with particular emphasis on the methodological and theoretical bases. For more detailed and extensive discussions, the reader can refer to the specific sections related to the research projects put forward by the single research units. The conceptual starting point of the activities planned by Unit I (Padova) explicitly refers to the limiting factors on information processing imposed by an attentional overload. Two different paradigms have been used extensively to study limitations affecting the processing of two sequential targets: The AB paradigm and the PRP >>>