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Perceptual load interacts with stimulus processing across sensory modalities.
Eur J Neurosci. 2009 Jun; 29(12):2426-34.EJ

Abstract

According to perceptual load theory, processing of task-irrelevant stimuli is limited by the perceptual load of a parallel attended task if both the task and the irrelevant stimuli are presented to the same sensory modality. However, it remains a matter of debate whether the same principles apply to cross-sensory perceptual load and, more generally, what form cross-sensory attentional modulation in early perceptual areas takes in humans. Here we addressed these questions using functional magnetic resonance imaging. Participants undertook an auditory one-back working memory task of low or high perceptual load, while concurrently viewing task-irrelevant images at one of three object visibility levels. The processing of the visual and auditory stimuli was measured in the lateral occipital cortex (LOC) and auditory cortex (AC), respectively. Cross-sensory interference with sensory processing was observed in both the LOC and AC, in accordance with previous results of unisensory perceptual load studies. The present neuroimaging results therefore warrant the extension of perceptual load theory from a unisensory to a cross-sensory context: a validation of this cross-sensory interference effect through behavioural measures would consolidate the findings.

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Authors+Show Affiliations

Klemen J
NeuroImage Nord, Department of Systems Neuroscience, University Medical Centre Hamburg Eppendorf, Martinistr. 52, Hamburg, Germany. klemenj@cardiff.ac.uk
Büchel C
No affiliation info available
Rose M
No affiliation info available

MeSH

Acoustic StimulationAdultAttentionAuditory CortexAuditory PerceptionBrain MappingCognitionFemaleHumansMagnetic Resonance ImagingMaleMemory, Short-TermModels, NeurologicalNeuropsychological TestsPerceptual MaskingPhotic StimulationPsychomotor PerformancePsychophysicsReaction TimeRecognition, PsychologySensationVisual CortexVisual PerceptionYoung Adult

Pub Type(s)

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

Language

eng

PubMed ID

19490081

Citation

Klemen, J, et al. "Perceptual Load Interacts With Stimulus Processing Across Sensory Modalities." The European Journal of Neuroscience, vol. 29, no. 12, 2009, pp. 2426-34.
Klemen J, Büchel C, Rose M. Perceptual load interacts with stimulus processing across sensory modalities. Eur J Neurosci. 2009;29(12):2426-34.
Klemen, J., Büchel, C., & Rose, M. (2009). Perceptual load interacts with stimulus processing across sensory modalities. The European Journal of Neuroscience, 29(12), 2426-34. https://doi.org/10.1111/j.1460-9568.2009.06774.x
Klemen J, Büchel C, Rose M. Perceptual Load Interacts With Stimulus Processing Across Sensory Modalities. Eur J Neurosci. 2009;29(12):2426-34. PubMed PMID: 19490081.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Perceptual load interacts with stimulus processing across sensory modalities. AU - Klemen,J, AU - Büchel,C, AU - Rose,M, Y1 - 2009/05/26/ PY - 2009/6/4/entrez PY - 2009/6/6/pubmed PY - 2009/9/29/medline SP - 2426 EP - 34 JF - The European journal of neuroscience JO - Eur J Neurosci VL - 29 IS - 12 N2 - According to perceptual load theory, processing of task-irrelevant stimuli is limited by the perceptual load of a parallel attended task if both the task and the irrelevant stimuli are presented to the same sensory modality. However, it remains a matter of debate whether the same principles apply to cross-sensory perceptual load and, more generally, what form cross-sensory attentional modulation in early perceptual areas takes in humans. Here we addressed these questions using functional magnetic resonance imaging. Participants undertook an auditory one-back working memory task of low or high perceptual load, while concurrently viewing task-irrelevant images at one of three object visibility levels. The processing of the visual and auditory stimuli was measured in the lateral occipital cortex (LOC) and auditory cortex (AC), respectively. Cross-sensory interference with sensory processing was observed in both the LOC and AC, in accordance with previous results of unisensory perceptual load studies. The present neuroimaging results therefore warrant the extension of perceptual load theory from a unisensory to a cross-sensory context: a validation of this cross-sensory interference effect through behavioural measures would consolidate the findings. SN - 1460-9568 UR - https://www.unboundmedicine.com/medline/citation/19490081/Perceptual_load_interacts_with_stimulus_processing_across_sensory_modalities_ L2 - https://doi.org/10.1111/j.1460-9568.2009.06774.x DB - PRIME DP - Unbound Medicine ER -