Spatial distribution of the inhibitory effect of peripheral non-informative cues on simple reaction time to non-fixated visual targets

Berlucchi, Giovanni; Tassinari, G.; Marzi, Carlo Alberto; Stefano, M. Di

doi:10.1016/0028-3932(89)90172-3

Cited by 89 publications

(73 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Our main result is that a parafoveal (2º) non-informative cue elicits an inhibition of saccadic eye movements towards an ipsilateral peripheral (10º) target, as observed for manual responses (2). This is an unexpected result because the rostral colliculus is involved in ocular fixation (20).…”

supporting

confidence: 64%

“…Since then, several investigators have described the spatial distribution of the inhibitory effects of a non-informative cue on manual and ocular responses to a visual target (2,3,5,7,8,11,14,15). Usually, there is no discrepancy between the results found using covert (without eye movements) and overt (with eye movements) responses, in agreement with the premotor theory of attention (11).…”

mentioning

confidence: 60%

“…The spatial distribution of IOR is one of its conspicuous properties. Several investigators have found that IOR is maximal at cue position, but the inhibition spreads over a large extension of the ipsilateral hemifield (2)(3)(4)(5)(6)(7)(8). For instance, Berlucchi et al (2) have reported that a cue located at 1º from the fixation point (FP) inhibits the manual response to an ipsilateral target located at a 30º eccentric position (a 29º cue-target distance), but does not inhibit the response to a contralateral target located at 1º from the FP (a 2º cue-target distance).…”

mentioning

confidence: 99%

“…Several investigators have found that IOR is maximal at cue position, but the inhibition spreads over a large extension of the ipsilateral hemifield (2)(3)(4)(5)(6)(7)(8). For instance, Berlucchi et al (2) have reported that a cue located at 1º from the fixation point (FP) inhibits the manual response to an ipsilateral target located at a 30º eccentric position (a 29º cue-target distance), but does not inhibit the response to a contralateral target located at 1º from the FP (a 2º cue-target distance). These findings are symmetrical with those found in covert voluntary orienting of attention experiments in which the MRT to a target occurring at the attended point is shorter than to targets occurring at other positions (9)(10)(11).…”

mentioning

confidence: 99%

See 3 more Smart Citations

Inhibition of return, gap effect and saccadic reaction time to a visual target

Guimaraes-Silva

Gawryszewski

Portugal

et al. 2004

Braz J Med Biol Res

View full text Add to dashboard Cite

Simple manual reaction time (MRT) to a visual target (S2) is shortened when a non-informative cue (S1) is flashed at the S2 location shortly before the onset of S2 (early facilitation). Afterwards, MRT to S2 appearing at the S1 location is lengthened (inhibition of return -IOR). Similar results have been obtained for saccadic reaction time (SRT). Moreover, when there is a temporal gap between offset of the fixation point (FP) and onset of a target (gap paradigm), SRT is shorter than SRT in an overlap paradigm (FP remains on). In the present study, we determined SRT to S2 (10º) after presenting S1 at the same eccentricity (10º) or at a parafoveal position (2º) in the same or in the opposite hemifield. In addition, we employed both gap and overlap paradigms. Twelve subjects were asked not to respond to S1 (2º or 10º) to the right or to the left of FP, but to respond by making a saccadic movement in response to S2. We obtained the following results: 1) a 40-ms gap effect, 2) an interaction between gap effect and IOR, 3) a 39-ms delay (IOR) when S2 appeared at the cued (S1) position, and 4) a smaller (17 ms) but significant inhibition when S1 occurred at 2º in the ipsilateral hemifield. Thus, a parafoveal (2º) S1 elicits an inhibition of SRT towards ipsilateral peripheral targets. Since an inhibition of the ipsilateral hemifield by a 1º eccentric cue has been reported to occur when manual responses are employed, we suggest that the postulated functional link between covert and overt orienting of attention is also valid for parafoveal cues.

show abstract

supporting

confidence: 64%

mentioning

confidence: 60%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Inhibition of return, gap effect and saccadic reaction time to a visual target

Guimaraes-Silva

Gawryszewski

Portugal

et al. 2004

Braz J Med Biol Res

View full text Add to dashboard Cite

show abstract

“…One such method is to have an observer watch subjects' eyes. Trials on which, in the opinion of the observer, subjects were not fixating centrally are rejected or re-presented at a later time (see, e.g., Berlucchi, Tassinari, Marzi, & Di Stefano, 1989;Maddess et al, 1973;Mohr, Pulvermiiller, & Zaidel, 1994;Nicholls & Atkinson, 1993;Schwartz, Montagner, & Kirsner, 1987). For example, Maddess et al described a method in which fixation location could be monitored by watching subjects' eyes through a monocular lens, whereas Berlucchi et al used video camera to project an image of subjects' eyes onto a television screen by which fixation location could be monitored.…”

Section: Techniques For Ensuring Central Fixationmentioning

confidence: 99%