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Updated: Sep 6, 2025
10:09
Mapping the After-effects of Theta Burst Stimulation on the Human Auditory Cortex with Functional Imaging
Published on: September 12, 2012
13.9K
Auditory Target Detection Enhances Visual Processing and Hippocampal Functional Connectivity
Roy Moyal1, Hamid B Turker1, Wen-Ming Luh2
1Cognitive Science Program, Department of Psychology, Cornell University, Ithaca, NY, United States.
Frontiers in Psychology
|June 30, 2022
Summary
Detecting important auditory cues enhances memory for concurrent images by boosting visual processing and connectivity. This attentional boost involves visual cortex, hippocampus, and locus coeruleus activity.
Area of Science:
- Neuroscience
- Cognitive Psychology
Background:
- Dividing attention typically impairs performance.
- Behaviorally relevant stimuli can enhance memory for unrelated concurrent information.
- Previous research indicates attentional selection boosts visual cortical activity and memory.
Purpose of the Study:
- Investigate if attentional selection effects are reflected in processing quality and functional connectivity in visual regions and the hippocampus.
- Examine the neural mechanisms underlying the attentional boost effect.
Main Methods:
- Functional magnetic resonance imaging (fMRI) study.
- Participants memorized images while detecting target auditory tones.
- Analyzed activity, functional connectivity, and multi-voxel pattern classification in response to auditory stimuli (target, distractor, none).
Main Results:
- Auditory target detection increased ventral visual cortex activity but decreased hippocampal activity.
- Enhanced functional connectivity between ventral visual cortex and hippocampus observed after target tones.
- Image category classification accuracy improved in the fusiform and parahippocampal gyri on target trials.
- Increased locus coeruleus activity and phasic pupil responses correlated with target detection.
Conclusions:
- Auditory target detection modulates visual processing and memory encoding.
- A network of cortical and subcortical regions, including the visual cortex, hippocampus, and locus coeruleus, is involved in processing information at behaviorally relevant moments.
- Findings support the role of noradrenergic influences in the attentional boost effect.
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