The Spatial Scale of Attention Strongly Modulates Saccade Latencies

Harwood, Mark R.; Madelain, Laurent; Krauzlis, Richard J.; Wallman, Josh

Document type :

Article dans une revue scientifique

DOI :

10.1152/jn.00589.2007

PMID :

18234988

Permalink :

http://hdl.handle.net/20.500.12210/40376

Title :

The Spatial Scale of Attention Strongly Modulates Saccade Latencies

Author(s) :

Harwood, Mark R. [Auteur]
City College of New York [CUNY] [CCNY]
Madelain, Laurent [Auteur]

Unité de Recherche en Sciences Cognitives et Affectives [URECA]
Krauzlis, Richard J. [Auteur]
Wallman, Josh [Auteur]

Journal title :

Journal of Neurophysiology

Abbreviated title :

Journal of Neurophysiology

Volume number :

Pages :

1743-1757

Publisher :

American Physiological Society

Publication date :

2008-04

HAL domain(s) :

Sciences cognitives

English abstract : [en]

We have previously shown that when a stimulus consisting of two concentric rings moves, saccade latencies are much longer (by 150 ms) when attention is directed to the larger ring than to the smaller ring. Here, we ...
Show more >We have previously shown that when a stimulus consisting of two concentric rings moves, saccade latencies are much longer (by 150 ms) when attention is directed to the larger ring than to the smaller ring. Here, we investigated whether this effect can be explained by a deferral of the “cost” of making a saccade while the target remains inside the attentional field, or by purely visual factors (eccentricity or contrast). We found 1) latencies were shorter when attention was directed to small features irrespective of retinal eccentricity; 2) saccade latency distributions were systematically determined by the ratio between the amplitude of the stimulus step and the diameter of the attended ring: stimulus steps that were larger than the attended ring resulted in short latencies, whereas steps smaller than the attended ring resulted in proportionally longer and more variable latencies; 3) this effect was not seen in manual reaction times to the same target movement; and 4) suprathreshold changes in the contrast of targets, mimicking possible attentional effects on perceived contrast and saliency, had little effect on latency. We argue that the spatial scale of attention determines the urgency of saccade motor preparation processes by changing the rate and rate variability of the underlying decision signal, to defer the cost of saccades that result in little visual benefit.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Administrative institution(s) :

Université de Lille
CNRS
CHU Lille

Collections :

Autres travaux scientifiques

Submission date :

2021-06-24T19:43:03Z
2021-06-25T09:48:41Z
2021-09-07T09:14:36Z

Version	Link	Modification date
3	20.500.12210/40376*	2021-09-07T09:14:06Z
2	20.500.12210/40376.2	2021-06-25T09:40:39Z
1	20.500.12210/40376.1	2021-06-24T19:43:03Z

The Spatial Scale of Attention Strongly ...

BibTeX

CSV

Excel

RIS

Version history

The Spatial Scale of Attention Strongly ... BibTeX CSV Excel RIS

Version history

The Spatial Scale of Attention Strongly ...

BibTeX

CSV

Excel

RIS