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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
Published on: January 23, 2017
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Internal valence modulates the speed of object recognition.
Matthew F Panichello1, Kestutis Kveraga2, Maximilien Chaumon3
1Princeton Neuroscience Institute, Princeton, NJ, USA. mfp2@princeton.edu.
Scientific Reports
|March 25, 2017
Summary
Momentary affect influences object recognition speed by altering neural responses in visual and affective brain regions. This demonstrates how emotions impact perception early in processing.
Area of Science:
- Cognitive Neuroscience
- Affective Neuroscience
- Visual Perception
Background:
- Strong structural connections exist between brain regions processing affect and visual information.
- The functional impact of these connections on perception remains largely unexplored.
- Understanding how momentary emotional states influence visual perception is crucial.
Purpose of the Study:
- To investigate the influence of induced affect (pleasant or unpleasant) on object recognition.
- To explore the neural mechanisms underlying affect's impact on perception.
- To determine if affect modulates functional interactions between affective and perceptual brain areas.
Main Methods:
- Induced pleasant or unpleasant affect in human participants.
- Recorded neural activity using magnetoencephalography (MEG) during an object recognition task.
- Analyzed evoked responses in occipitotemporal cortex and affective regions.
Main Results:
- Affect significantly influenced the speed of object recognition.
- Neural activity speed and amplitude in occipitotemporal cortex and affective regions were modulated by affect.
- Functional interactions between affective and perceptual regions were altered by affect early in processing.
Conclusions:
- Momentary affect serves as a significant contextual influence on object recognition.
- Affect modulates neural processing in both perceptual and affective brain networks.
- These findings highlight the dynamic interplay between emotion and perception.
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