Tags

Type your tag names separated by a space and hit enter

Sustained division of spatial attention to multiple locations within one hemifield.
Neurosci Lett. 2007 Feb 27; 414(1):65-70.NL

Abstract

Attending to a location in space significantly improves stimulus perception at that location. Everyday experience requires the deployment of attention to multiple objects at different locations. Recent empirical evidence suggests that the "beam" of attention can be divided between non-contiguous areas of the visual field. Whether this is only possible when stimuli are presented in different hemifields and harder, if not impossible, when stimuli are in the same hemifield is an ongoing debate. Here we use an electrophysiological measure of sustained attentional resource allocation (the steady-state visual evoked potential, SSVEP) to address this question. In combination with behavioural data we demonstrate that splitting the attentional "beam" is in principle possible within one hemifield. However, results showed that task performance was in general lower for same-hemifield presentation as opposed to our previous study with different-hemifield presentation [M.M. Müller, P. Malinowski, T. Gruber, S.A. Hillyard, Sustained division of the attentional spotlight, Nature 424 (2003) 309-312]. SSVEP amplitude showed a mixed pattern of results for stimuli presented in the upper versus lower quadrant of the left visual hemifield under conditions of attending to two separated locations. Results are discussed in the light of the bilateral distribution advantage hypothesis and differences in stimulus salience between the upper and lower visual field.

Authors+Show Affiliations

Liverpool John Moores University, School of Psychology, United Kingdom.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17207932

Citation

Malinowski, Peter, et al. "Sustained Division of Spatial Attention to Multiple Locations Within One Hemifield." Neuroscience Letters, vol. 414, no. 1, 2007, pp. 65-70.
Malinowski P, Fuchs S, Müller MM. Sustained division of spatial attention to multiple locations within one hemifield. Neurosci Lett. 2007;414(1):65-70.
Malinowski, P., Fuchs, S., & Müller, M. M. (2007). Sustained division of spatial attention to multiple locations within one hemifield. Neuroscience Letters, 414(1), 65-70.
Malinowski P, Fuchs S, Müller MM. Sustained Division of Spatial Attention to Multiple Locations Within One Hemifield. Neurosci Lett. 2007 Feb 27;414(1):65-70. PubMed PMID: 17207932.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sustained division of spatial attention to multiple locations within one hemifield. AU - Malinowski,Peter, AU - Fuchs,Sandra, AU - Müller,Matthias M, Y1 - 2007/01/04/ PY - 2006/09/07/received PY - 2006/11/06/revised PY - 2006/12/01/accepted PY - 2007/1/9/pubmed PY - 2007/4/28/medline PY - 2007/1/9/entrez SP - 65 EP - 70 JF - Neuroscience letters JO - Neurosci Lett VL - 414 IS - 1 N2 - Attending to a location in space significantly improves stimulus perception at that location. Everyday experience requires the deployment of attention to multiple objects at different locations. Recent empirical evidence suggests that the "beam" of attention can be divided between non-contiguous areas of the visual field. Whether this is only possible when stimuli are presented in different hemifields and harder, if not impossible, when stimuli are in the same hemifield is an ongoing debate. Here we use an electrophysiological measure of sustained attentional resource allocation (the steady-state visual evoked potential, SSVEP) to address this question. In combination with behavioural data we demonstrate that splitting the attentional "beam" is in principle possible within one hemifield. However, results showed that task performance was in general lower for same-hemifield presentation as opposed to our previous study with different-hemifield presentation [M.M. Müller, P. Malinowski, T. Gruber, S.A. Hillyard, Sustained division of the attentional spotlight, Nature 424 (2003) 309-312]. SSVEP amplitude showed a mixed pattern of results for stimuli presented in the upper versus lower quadrant of the left visual hemifield under conditions of attending to two separated locations. Results are discussed in the light of the bilateral distribution advantage hypothesis and differences in stimulus salience between the upper and lower visual field. SN - 0304-3940 UR - https://www.unboundmedicine.com/medline/citation/17207932/Sustained_division_of_spatial_attention_to_multiple_locations_within_one_hemifield_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3940(06)01301-2 DB - PRIME DP - Unbound Medicine ER -