Spatial stimulus coding and the focus of attention in S-R compatibility and the Simon effect

Stoffer, Thomas H.; Umiltà, Carlo

doi:10.1016/s0166-4115(97)80033-7

Cited by 72 publications

(71 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As already mentioned, focusing is supposed to be sequential and independent of orienting (Benso et al, 1998;Castiello and Umiltà, 1990;Stoffer, 1991;Stoffer and Umiltà, 1997;Turatto et al, 1999). Focusing is activated upon orienting of attention towards an object in the visual field.…”

Section: Methodsmentioning

confidence: 99%

“…Indeed, there are evidence suggesting that focusing, which basically consists in adjusting the width of the attentional focus to the size of the observed object, is independent of orienting (Benso, Turatto, Mascetti et al, 1998;Castiello and Umiltà, 1990;Stoffer and Umiltà, 1997;Turatto, Benso, Facoetti et al, 1999). The latter consists in moving the focus across the visual field, and was assessed by means of a covert paradigm , which presupposes shifting of attention in the visual field without any eye movements (Posner, Snyder and Davidson, 1980).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Visual-Spatial Attention in Developmental Dyslexia

Facoetti

Paganoni

Turatto

et al. 2000

Cortex

241

182

View full text Add to dashboard Cite

Orienting and focusing of visual attention are two processes strictly involved in reading. They were studied in a group of dyslexic children and normal readers. Shifting of attention by both peripheral and central visual cues was studied by means of the covert orienting paradigm. Focusing, consisting in the ability to control the size of the attentional focus, was investigated using simple reaction times in central vision. Results showed that dyslexics had a specific disability in the shifting of attention caused by a peripheral cue at short SOAs, and were also able to maintain attention focused for short periods of time only, presumably not long enough for efficient visual processing. Our results support the suggestion that visual selective attention deficits in disabled readers may be due to a specific difficulty in orienting and focusing.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Visual-Spatial Attention in Developmental Dyslexia

Facoetti

Paganoni

Turatto

et al. 2000

Cortex

241

182

View full text Add to dashboard Cite

show abstract

“…As the authors suggested, it is possible that at the shortest SOA, the process of narrowing the attentional focus had not yet been terminated, whereas orienting had, at least in part, already occurred. Second, Stoffer (1991 ; see also Stoffer & Umilta, 1997) found that a spatial compatibility effect was caused by the orienting of attention, but not by the zooming process. The author argued that the positional code of the stimulus is crucial for orienting but is immaterial for zooming.…”

Section: Focusing Of Attentionmentioning

confidence: 99%

Automatic and voluntary focusing of attention

Turatto

Benso

Facoetti

et al. 2000

Perception & Psychophysics

Self Cite

View full text Add to dashboard Cite

In this study, we investigate whether attentional focusing, like attentional orienting, comprises two independent mechanisms. We provide direct empirical evidence in favor of the existence of two mechanisms--one exogenous, or automatic, and one endogenous, or voluntary-that playa role in adjusting the size of the focus of attention. Whena new object suddenly occurs in the visual field, the focus is first automatically fitted to it, and then an endogenous effort has to be exerted to maintain attention in the focused mode. Also, we provide evidence that voluntary focusing needs a perceptual object in order to operate.

show abstract

“…Stoffer, 1991;Stoffer & Umilta Á, 1997), selecting an object in the visual ®eld requires that attention be directed from its current position (e.g. a ®xation point) to the object's position.…”

Section: Attention-shifting Accountmentioning

confidence: 99%