scholarly journals Age-related differences in interhemispheric visuomotor integration measured by the redundant target effect.

2012 ◽  
Vol 27 (2) ◽  
pp. 399-409 ◽  
Author(s):  
Elisabeth Linnet ◽  
Matthew E. Roser
Keyword(s):  
Visuomotor Integration ◽  
Redundant Target ◽  
Redundant Target Effect ◽  
Age Related ◽  
Target Effect

Central Visual Persistence as Measured by the Redundant Target Effect

Perception ◽  
1997 ◽  
Vol 26 (1_suppl) ◽  
pp. 259-259 ◽  
Author(s):  
C A Marzi ◽  
G Nitro ◽  
M Prior
Keyword(s):  
Evoked Potential ◽  
Normal Subjects ◽  
Stimulus Onset ◽  
Visual Persistence ◽  
Single Stimulus ◽  
Redundant Target ◽  
Redundant Target Effect ◽  
Speed Of Response ◽  
Target Effect ◽  
Onset Asynchrony

We measured the duration of central visual persistence by testing normal subjects for the redundant target effect (RTE), ie the speeding up of reaction time to redundant visual stimuli in comparison to similar single stimuli. Brief LED-generated flashes were presented to normal subjects either singly or in a pair at peripheral visual field locations (5 or 30 deg along the horizontal meridian). Stimulus pairs could appear either in the same hemifield at different locations or in opposite hemifields with a stimulus onset asynchrony (SOA) ranging between 0 and 100 ms. The subject's task was to press a key as soon as possible following the appearance of either a single stimulus or of the first stimulus in a pair. We found a robust and consistent overall RTE with double stimuli yielding faster RTs than single stimuli for both intrafield and interfield presentations. The effect decreased significantly from 0 ms to 40 ms SOA and at longer SOAs the speed of response to stimulus pairs was indistinguishable from that to a single stimulus. We believe that the longest SOA compatible with a reliable RTE (40 ms) reflects the duration of central persistence. Evoked-potential evidence gathered in our laboratory suggests that the locus of such persistence may be the extrastriate visual cortex.

Sensory and motor involvement in the enhanced redundant target effect: A study comparing anterior- and totally split-brain individuals

2009 ◽  
Vol 47 (3) ◽  
pp. 684-692 ◽  
Author(s):  
Catherine Ouimet ◽  
Pierre Jolicœur ◽  
Jeff Miller ◽  
Alexia Ptito ◽  
Aldo Paggi ◽  
...  
Keyword(s):  
Redundant Target ◽  
Split Brain ◽  
Redundant Target Effect ◽  
Target Effect

Redundant target effect and intersensory facilitation from visual-tactile interactions in simple reaction time

2002 ◽  
Vol 143 (4) ◽  
pp. 480-487 ◽  
Author(s):  
Bettina Forster ◽  
Cristiana Cavina-Pratesi ◽  
Salvatore M. Aglioti ◽  
Giovanni Berlucchi
Keyword(s):  
Reaction Time ◽  
Simple Reaction Time ◽  
Redundant Target ◽  
Simple Reaction ◽  
Intersensory Facilitation ◽  
Redundant Target Effect ◽  
Target Effect

The role of the magnocellular and parvocellular systems in the redundant target effect

2004 ◽  
Vol 158 (2) ◽  
Author(s):  
Massimo Turatto ◽  
Veronica Mazza ◽  
Silvia Savazzi ◽  
CarloA. Marzi
Keyword(s):  
Redundant Target ◽  
Redundant Target Effect ◽  
Target Effect

scholarly journals Multisensory processing in the redundant-target effect: A behavioral and event-related potential study

2005 ◽  
Vol 67 (4) ◽  
pp. 713-726 ◽  
Author(s):  
Matthias Gondan ◽  
Birgit Niederhaus ◽  
Frank Rösler ◽  
Brigitte Röder
Keyword(s):  
Multisensory Processing ◽  
Event Related Potential ◽  
Redundant Target ◽  
Redundant Target Effect ◽  
Potential Study ◽  
Target Effect

Coactive Processing of Dimensionally Redundant Targets Within the Auditory Modality?

2011 ◽  
Vol 58 (1) ◽  
pp. 50-54 ◽  
Author(s):  
Anja Fiedler ◽  
Hannes Schröter ◽  
Rolf Ulrich
Keyword(s):  
Two Dimensions ◽  
Auditory Stimuli ◽  
Visual Modality ◽  
Auditory Modality ◽  
Tone Frequency ◽  
Redundant Target ◽  
Redundant Target Effect ◽  
Target Effect ◽  
Previous Reaction ◽  
Redundant Targets

Previous reaction time studies have demonstrated coactivation processes within the visual modality for redundant stimuli that differ in two dimensions (e.g., shape and color). The present study provides novel results of analogous processes within the auditory modality. A redundant-target effect (RTE) was obtained in a Go/NoGo experiment using tones that differed in location and/or frequency. Participants were asked to respond to a specific tone location (e.g., left) and/or tone frequency (e.g., 200 Hz) of auditory stimuli. For redundant targets (e.g., a 200 Hz tone presented to the left), an RTE was observed which was too large to be explained by mere statistical facilitation. Therefore, responses to redundant targets were triggered by a combined activation of the target dimensions. The results are consistent with the modular hybrid account of Mordkoff and Yantis (1993) .

Redundant target effect and the processing of colour and luminance

2008 ◽  
Vol 187 (1) ◽  
pp. 153-160 ◽  
Author(s):  
N. Ridgway ◽  
M. Milders ◽  
A. Sahraie
Keyword(s):  
Redundant Target ◽  
Redundant Target Effect ◽  
Target Effect

scholarly journals The redundant target effect is affected by modality switch costs

2004 ◽  
Vol 11 (2) ◽  
pp. 307-313 ◽  
Author(s):  
Matthias Gondan ◽  
Kathrin Lange ◽  
Frank Rösler ◽  
Brigitte Röder
Keyword(s):  
Redundant Target ◽  
Redundant Target Effect ◽  
Switch Costs ◽  
Target Effect

scholarly journals Neural Site of the Redundant Target Effect: Electrophysiological Evidence

1998 ◽  
Vol 10 (2) ◽  
pp. 216-230 ◽  
Author(s):  
C. Miniussi ◽  
M. Girelli ◽  
C. A. Marzi
Keyword(s):  
Visual Processing ◽  
Event Related Potentials ◽  
Probability Summation ◽  
Redundant Target Effect ◽  
Early Visual Processing ◽  
Visual Hemifield ◽  
Related Potentials ◽  
Target Effect ◽  
Electrophysiological Correlate ◽  
Double Targets

The present study represents an attempt to find an electrophysiological correlate of the redundant targets effect, or RTE (i.e., the speeding up of reaction time, or RT, for redundant vs. single targets). Subjects made a speeded response either to one small checkerboard presented to the left or right of fixation or to a pair of identical checkerboards presented simultaneously to both hemifields. Both single and double targets could appear either in the upper or lower visual hemifield. The task required detection but not discrimination of the stimuli. During task performance, we recorded the event-related potentials (ERPs) elicited by the checkerboard targets. As in previous studies, we found that manual RTs to bilateral stimuli were faster than those to unilateral stimuli. This effect was more marked for lower-than for upper-field stimuli and could not be ascribed to probability summation. In addition, we found that the P1 and N1 components of the visual ERP had a shorter latency for bilateral than for summed unilateral stimuli presented to the two hemifields. In parallel with the behavioral findings, the latency values for the above components showed a larger RTE for lower-field stimuli. These findings indicate that the RTE occurs at the level of early visual processing, probably in the extrastriate visual cortex, rather than at late decisional or pre-motor stages.

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