Abstract
Event-related potentials and reaction times were recorded to stimuli flashed to the left and right visual hemifields under different conditions of covert spatial attention. In different blocks, subjects were instructed to allocate attention primarily to either the left or to the right stimulus locations, or to divide attention equivalently between left and right locations (i.e., neutral condition). Regardless of attention condition, however, speeded motor responses were required to stimuli in both visual fields. In comparison to the neutral attention condition, reaction times were slower for targets at unattended locations (costs) and faster for the targets at attended locations (benefits), however, only costs were statistically significant. Significant attention-related enhancements were observed for both early and late ERP components. Cost/benefit analysis of the ERPs revealed ERP benefits in the amplitudes of the early sensory-evoked cortical component P1 (100-160 ms). In contrast, ERP costs appeared only at a relatively late stage of perceptual processing (200-280 ms latency post-stimulus). The relationship between RT and ERP costs and benefits is discussed with respect to models of spatial attention.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 221-233 |
| Number of pages | 13 |
| Journal | International Journal of Neuroscience |
| Volume | 79 |
| Issue number | 3-4 |
| DOIs | |
| State | Published - 1994 |
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Keywords
- Benefits
- Costs
- ERPs
- RTs
- Sustained attention
- Visual-spatial attention
ASJC Scopus subject areas
- Neuroscience(all)
Cite this
Electrophysiological and behavioral costs" and benefits" during sustained visual-spatial attention. / Proverbio, Alice Mado; Mangun, George R.
In: International Journal of Neuroscience, Vol. 79, No. 3-4, 1994, p. 221-233.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electrophysiological and behavioral costs" and benefits" during sustained visual-spatial attention
AU - Proverbio, Alice Mado
AU - Mangun, George R
PY - 1994
Y1 - 1994
N2 - Event-related potentials and reaction times were recorded to stimuli flashed to the left and right visual hemifields under different conditions of covert spatial attention. In different blocks, subjects were instructed to allocate attention primarily to either the left or to the right stimulus locations, or to divide attention equivalently between left and right locations (i.e., neutral condition). Regardless of attention condition, however, speeded motor responses were required to stimuli in both visual fields. In comparison to the neutral attention condition, reaction times were slower for targets at unattended locations (costs) and faster for the targets at attended locations (benefits), however, only costs were statistically significant. Significant attention-related enhancements were observed for both early and late ERP components. Cost/benefit analysis of the ERPs revealed ERP benefits in the amplitudes of the early sensory-evoked cortical component P1 (100-160 ms). In contrast, ERP costs appeared only at a relatively late stage of perceptual processing (200-280 ms latency post-stimulus). The relationship between RT and ERP costs and benefits is discussed with respect to models of spatial attention.
AB - Event-related potentials and reaction times were recorded to stimuli flashed to the left and right visual hemifields under different conditions of covert spatial attention. In different blocks, subjects were instructed to allocate attention primarily to either the left or to the right stimulus locations, or to divide attention equivalently between left and right locations (i.e., neutral condition). Regardless of attention condition, however, speeded motor responses were required to stimuli in both visual fields. In comparison to the neutral attention condition, reaction times were slower for targets at unattended locations (costs) and faster for the targets at attended locations (benefits), however, only costs were statistically significant. Significant attention-related enhancements were observed for both early and late ERP components. Cost/benefit analysis of the ERPs revealed ERP benefits in the amplitudes of the early sensory-evoked cortical component P1 (100-160 ms). In contrast, ERP costs appeared only at a relatively late stage of perceptual processing (200-280 ms latency post-stimulus). The relationship between RT and ERP costs and benefits is discussed with respect to models of spatial attention.
KW - Benefits
KW - Costs
KW - ERPs
KW - RTs
KW - Sustained attention
KW - Visual-spatial attention
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UR - http://www.scopus.com/inward/citedby.url?scp=0028696442&partnerID=8YFLogxK
U2 - 10.3109/00207459408986083
DO - 10.3109/00207459408986083
M3 - Article
C2 - 7744564
AN - SCOPUS:0028696442
VL - 79
SP - 221
EP - 233
JO - International Journal of Neuroscience
JF - International Journal of Neuroscience
SN - 0020-7454
IS - 3-4
ER -