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Cross-modal interactions in time and space: auditory influence on visual attention in hemispatial neglect.
J Cogn Neurosci. 2006 Aug; 18(8):1368-79.JC

Abstract

Recent studies indicate that auditory tone presentation and auditory alerting can temporarily ameliorate visuospatial attention deficits in patients with unilateral neglect [Frassinetti, F., Pavani, F., & Ladavas, E. Acoustical vision of neglected stimuli: Interaction among spatially converging audiovisual inputs in neglect patients. Journal of Cognitive Neuroscience, 14, 62-69, 2002; Robertson, I. H., Mattingley, J. B., Rorden, C., & Driver, J. Phasic alerting of neglect patients overcomes their spatial deficit in visual awareness. Nature, 395, 169-172, 1998]. The current study investigated proposed mechanisms of cross-modal interaction to determine conditions in which auditory stimulation affects spatial and nonspatially lateralized attention deficits in a patient with hemispatial neglect. In Experiment 1, a target was presented among related distracters (conjunction search) while a tone was presented either bilaterally or in a congruent or incongruent spatial location with respect to the visual target. Whereas the results suggest a benefit of both general alerting and cross-modal spatial integration on visual search efficiency, the most significant improvement occurred when the target and tone were both presented in contralesional space. In Experiment 2, the effect of auditory alerting on selective attention was examined in a rapid serial visual search procedure with visual targets embedded in a stream of distracters presented at central fixation. When two targets were presented without an alerting tone, the patient missed the second target for up to 1000 msec after the first target appeared (a finding known as the "attentional blink" [AB] and, on average, about 400-500 msec in normals). An alerting tone presented at a fixed temporal location significantly reduced the AB in a tone-duration-dependent manner. Experiment 3 examined the effect of cross-modal space on selective attention in an AB paradigm in which T2 occurred randomly to the left or right of T1 with a spatially congruent or incongruent tone. Discrimination of T2 in contralesional space significantly improved when the tone was presented in the same location, and was impaired when the tone was presented on the ipsilesional side. The findings are discussed as they relate to cross-modal interactions and their influence on spatial and nonspatially lateralized attention deficits in neglect.

Authors+Show Affiliations

University of California, Berkeley, CA 94720-5050, USA. tomvanvleet@ebire.orgNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

16859421

Citation

Van Vleet, Thomas M., and Lynn C. Robertson. "Cross-modal Interactions in Time and Space: Auditory Influence On Visual Attention in Hemispatial Neglect." Journal of Cognitive Neuroscience, vol. 18, no. 8, 2006, pp. 1368-79.
Van Vleet TM, Robertson LC. Cross-modal interactions in time and space: auditory influence on visual attention in hemispatial neglect. J Cogn Neurosci. 2006;18(8):1368-79.
Van Vleet, T. M., & Robertson, L. C. (2006). Cross-modal interactions in time and space: auditory influence on visual attention in hemispatial neglect. Journal of Cognitive Neuroscience, 18(8), 1368-79.
Van Vleet TM, Robertson LC. Cross-modal Interactions in Time and Space: Auditory Influence On Visual Attention in Hemispatial Neglect. J Cogn Neurosci. 2006;18(8):1368-79. PubMed PMID: 16859421.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cross-modal interactions in time and space: auditory influence on visual attention in hemispatial neglect. AU - Van Vleet,Thomas M, AU - Robertson,Lynn C, PY - 2006/7/25/pubmed PY - 2006/9/20/medline PY - 2006/7/25/entrez SP - 1368 EP - 79 JF - Journal of cognitive neuroscience JO - J Cogn Neurosci VL - 18 IS - 8 N2 - Recent studies indicate that auditory tone presentation and auditory alerting can temporarily ameliorate visuospatial attention deficits in patients with unilateral neglect [Frassinetti, F., Pavani, F., & Ladavas, E. Acoustical vision of neglected stimuli: Interaction among spatially converging audiovisual inputs in neglect patients. Journal of Cognitive Neuroscience, 14, 62-69, 2002; Robertson, I. H., Mattingley, J. B., Rorden, C., & Driver, J. Phasic alerting of neglect patients overcomes their spatial deficit in visual awareness. Nature, 395, 169-172, 1998]. The current study investigated proposed mechanisms of cross-modal interaction to determine conditions in which auditory stimulation affects spatial and nonspatially lateralized attention deficits in a patient with hemispatial neglect. In Experiment 1, a target was presented among related distracters (conjunction search) while a tone was presented either bilaterally or in a congruent or incongruent spatial location with respect to the visual target. Whereas the results suggest a benefit of both general alerting and cross-modal spatial integration on visual search efficiency, the most significant improvement occurred when the target and tone were both presented in contralesional space. In Experiment 2, the effect of auditory alerting on selective attention was examined in a rapid serial visual search procedure with visual targets embedded in a stream of distracters presented at central fixation. When two targets were presented without an alerting tone, the patient missed the second target for up to 1000 msec after the first target appeared (a finding known as the "attentional blink" [AB] and, on average, about 400-500 msec in normals). An alerting tone presented at a fixed temporal location significantly reduced the AB in a tone-duration-dependent manner. Experiment 3 examined the effect of cross-modal space on selective attention in an AB paradigm in which T2 occurred randomly to the left or right of T1 with a spatially congruent or incongruent tone. Discrimination of T2 in contralesional space significantly improved when the tone was presented in the same location, and was impaired when the tone was presented on the ipsilesional side. The findings are discussed as they relate to cross-modal interactions and their influence on spatial and nonspatially lateralized attention deficits in neglect. SN - 0898-929X UR - https://www.unboundmedicine.com/medline/citation/16859421/Cross_modal_interactions_in_time_and_space:_auditory_influence_on_visual_attention_in_hemispatial_neglect_ L2 - https://www.mitpressjournals.org/doi/10.1162/jocn.2006.18.8.1368?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -