Multiple foci of spatial attention in multimodal working memory

Tobias Katus (Corresponding Author), Martin Eimer

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The maintenance of sensory information in working memory (WM) is mediated by the attentional activation of stimulus representations that are stored in perceptual brain regions. Using event-related potentials (ERPs), we measured tactile and visual contralateral delay activity (tCDA/CDA components) in a bimodal WM task to concurrently track the attention-based maintenance of information stored in anatomically segregated (somatosensory and visual) brain areas. Participants received tactile and visual sample stimuli on both sides, and in different blocks, memorized these samples on the same side or on opposite sides. After a retention delay, memory was unpredictably tested for touch or vision. In the same side blocks, tCDA and CDA components simultaneously emerged over the same hemisphere, contralateral to the memorized tactile/visual sample set. In opposite side blocks, these two components emerged over different hemispheres, but had the same sizes and onset latencies as in the same side condition. Our results reveal distinct foci of tactile and visual spatial attention that were concurrently maintained on task-relevant stimulus representations in WM. The independence of spatially-specific biasing mechanisms for tactile and visual WM content suggests that multimodal information is stored in distributed perceptual brain areas that are activated through modality-specific processes that can operate simultaneously and largely independently of each other.

Original languageEnglish
Pages (from-to)583-589
Number of pages7
JournalNeuroimage
Volume142
Early online date17 Aug 2016
DOIs
Publication statusPublished - 15 Nov 2016

Fingerprint

Touch
Short-Term Memory
Brain
Evoked Potentials

Keywords

  • Adult
  • Attention/physiology
  • Electroencephalography/methods
  • Evoked Potentials/physiology
  • Female
  • Functional Laterality/physiology
  • Humans
  • Male
  • Memory, Short-Term/physiology
  • Somatosensory Cortex/physiology
  • Space Perception/physiology
  • Touch Perception/physiology
  • Visual Cortex/physiology
  • Young Adult

Cite this

Multiple foci of spatial attention in multimodal working memory. / Katus, Tobias (Corresponding Author); Eimer, Martin.

In: Neuroimage, Vol. 142, 15.11.2016, p. 583-589.

Research output: Contribution to journalArticle

@article{96160ece4b844df49b514644ecc0c489,
title = "Multiple foci of spatial attention in multimodal working memory",
abstract = "The maintenance of sensory information in working memory (WM) is mediated by the attentional activation of stimulus representations that are stored in perceptual brain regions. Using event-related potentials (ERPs), we measured tactile and visual contralateral delay activity (tCDA/CDA components) in a bimodal WM task to concurrently track the attention-based maintenance of information stored in anatomically segregated (somatosensory and visual) brain areas. Participants received tactile and visual sample stimuli on both sides, and in different blocks, memorized these samples on the same side or on opposite sides. After a retention delay, memory was unpredictably tested for touch or vision. In the same side blocks, tCDA and CDA components simultaneously emerged over the same hemisphere, contralateral to the memorized tactile/visual sample set. In opposite side blocks, these two components emerged over different hemispheres, but had the same sizes and onset latencies as in the same side condition. Our results reveal distinct foci of tactile and visual spatial attention that were concurrently maintained on task-relevant stimulus representations in WM. The independence of spatially-specific biasing mechanisms for tactile and visual WM content suggests that multimodal information is stored in distributed perceptual brain areas that are activated through modality-specific processes that can operate simultaneously and largely independently of each other.",
keywords = "Adult, Attention/physiology, Electroencephalography/methods, Evoked Potentials/physiology, Female, Functional Laterality/physiology, Humans, Male, Memory, Short-Term/physiology, Somatosensory Cortex/physiology, Space Perception/physiology, Touch Perception/physiology, Visual Cortex/physiology, Young Adult",
author = "Tobias Katus and Martin Eimer",
note = "Acknowledgments This work was funded by the Deutsche Forschungsgemeinschaft (DFG Grants KA 3843/1-1, KA 3843/1-2 and KA 3843/2-1), the Leverhulme Trust (Grant RPG-2015-370), and was supported by a grant from the Economic and Social Research Council (ESRC) (ES/L016400/1), United Kingdom. We thank Sue Nicholas for help in setting up the tactile stimulation hardware, and Andreas Widmann for providing EEGLab plugins for digital filtering and spherical spline interpolation. We furthermore thank John McDonald, Tobias Heed and five anonymous reviewers for their constructive comments on an earlier version of this manuscript.",
year = "2016",
month = "11",
day = "15",
doi = "10.1016/j.neuroimage.2016.08.019",
language = "English",
volume = "142",
pages = "583--589",
journal = "Neuroimage",
issn = "1053-8119",
publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Multiple foci of spatial attention in multimodal working memory

AU - Katus, Tobias

AU - Eimer, Martin

N1 - Acknowledgments This work was funded by the Deutsche Forschungsgemeinschaft (DFG Grants KA 3843/1-1, KA 3843/1-2 and KA 3843/2-1), the Leverhulme Trust (Grant RPG-2015-370), and was supported by a grant from the Economic and Social Research Council (ESRC) (ES/L016400/1), United Kingdom. We thank Sue Nicholas for help in setting up the tactile stimulation hardware, and Andreas Widmann for providing EEGLab plugins for digital filtering and spherical spline interpolation. We furthermore thank John McDonald, Tobias Heed and five anonymous reviewers for their constructive comments on an earlier version of this manuscript.

PY - 2016/11/15

Y1 - 2016/11/15

N2 - The maintenance of sensory information in working memory (WM) is mediated by the attentional activation of stimulus representations that are stored in perceptual brain regions. Using event-related potentials (ERPs), we measured tactile and visual contralateral delay activity (tCDA/CDA components) in a bimodal WM task to concurrently track the attention-based maintenance of information stored in anatomically segregated (somatosensory and visual) brain areas. Participants received tactile and visual sample stimuli on both sides, and in different blocks, memorized these samples on the same side or on opposite sides. After a retention delay, memory was unpredictably tested for touch or vision. In the same side blocks, tCDA and CDA components simultaneously emerged over the same hemisphere, contralateral to the memorized tactile/visual sample set. In opposite side blocks, these two components emerged over different hemispheres, but had the same sizes and onset latencies as in the same side condition. Our results reveal distinct foci of tactile and visual spatial attention that were concurrently maintained on task-relevant stimulus representations in WM. The independence of spatially-specific biasing mechanisms for tactile and visual WM content suggests that multimodal information is stored in distributed perceptual brain areas that are activated through modality-specific processes that can operate simultaneously and largely independently of each other.

AB - The maintenance of sensory information in working memory (WM) is mediated by the attentional activation of stimulus representations that are stored in perceptual brain regions. Using event-related potentials (ERPs), we measured tactile and visual contralateral delay activity (tCDA/CDA components) in a bimodal WM task to concurrently track the attention-based maintenance of information stored in anatomically segregated (somatosensory and visual) brain areas. Participants received tactile and visual sample stimuli on both sides, and in different blocks, memorized these samples on the same side or on opposite sides. After a retention delay, memory was unpredictably tested for touch or vision. In the same side blocks, tCDA and CDA components simultaneously emerged over the same hemisphere, contralateral to the memorized tactile/visual sample set. In opposite side blocks, these two components emerged over different hemispheres, but had the same sizes and onset latencies as in the same side condition. Our results reveal distinct foci of tactile and visual spatial attention that were concurrently maintained on task-relevant stimulus representations in WM. The independence of spatially-specific biasing mechanisms for tactile and visual WM content suggests that multimodal information is stored in distributed perceptual brain areas that are activated through modality-specific processes that can operate simultaneously and largely independently of each other.

KW - Adult

KW - Attention/physiology

KW - Electroencephalography/methods

KW - Evoked Potentials/physiology

KW - Female

KW - Functional Laterality/physiology

KW - Humans

KW - Male

KW - Memory, Short-Term/physiology

KW - Somatosensory Cortex/physiology

KW - Space Perception/physiology

KW - Touch Perception/physiology

KW - Visual Cortex/physiology

KW - Young Adult

U2 - 10.1016/j.neuroimage.2016.08.019

DO - 10.1016/j.neuroimage.2016.08.019

M3 - Article

VL - 142

SP - 583

EP - 589

JO - Neuroimage

JF - Neuroimage

SN - 1053-8119

ER -