Sensory cortical response to uncertainty and low salience during recognition of affective cues in musical intervals
| Autor: | Martin Rohrmeier, Fernando Bravo, Ian Cross, Emmanuel Stamatakis |
|---|---|
| Přispěvatelé: | Cross, Ian [0000-0002-2404-7765], Stamatakis, Emmanuel [0000-0001-6955-9601], Apollo - University of Cambridge Repository |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Male
Pleasure Physiology Sensory Physiology Social Sciences lcsh:Medicine Frustration Diagnostic Radiology 0302 clinical medicine Functional Magnetic Resonance Imaging Medicine and Health Sciences Psychology Attention lcsh:Science media_common Brain Mapping Multidisciplinary Music psychology Radiology and Imaging Physics 05 social sciences Uncertainty Brain Magnetic Resonance Imaging Sensory Systems Auditory System Physical Sciences Auditory Perception Sensory Perception Female Anatomy Cues Research Article Cognitive psychology Adult Imaging Techniques Cognitive Neuroscience media_common.quotation_subject Neuroimaging Sensory system Research and Analysis Methods 050105 experimental psychology 03 medical and health sciences Diagnostic Medicine Salience (neuroscience) Perception Acoustic Signals Reaction Time Humans Learning 0501 psychology and cognitive sciences Auditory Cortex Behavior lcsh:R Cognitive Psychology Biology and Life Sciences Bayes Theorem Acoustics Cortical response Acoustic Stimulation Cognitive Science lcsh:Q Bioacoustics 030217 neurology & neurosurgery Music Neuroscience |
| Zdroj: | PLoS ONE, Vol 12, Iss 4, p e0175991 (2017) PLoS ONE |
| DOI: | 10.17863/cam.10024 |
| Popis: | Previous neuroimaging studies have shown an increased sensory cortical response (i.e., heightened weight on sensory evidence) under higher levels of predictive uncertainty. The signal enhancement theory proposes that attention improves the quality of the stimulus representation, and therefore reduces uncertainty by increasing the gain of the sensory signal. The present study employed functional magnetic resonance imaging (fMRI) to investigate the neural correlates for ambiguous valence inferences signaled by auditory information within an emotion recognition paradigm. Participants categorized sound stimuli of three distinct levels of consonance/dissonance controlled by interval content. Separate behavioural and neuroscientific experiments were conducted. Behavioural results revealed that, compared with the consonance condition (perfect fourths, fifths and octaves) and the strong dissonance condition (minor/major seconds and tritones), the intermediate dissonance condition (minor thirds) was the most ambiguous, least salient and more cognitively demanding category (slowest reaction times). The neuroscientific findings were consistent with a heightened weight on sensory evidence whilst participants were evaluating intermediate dissonances, which was reflected in an increased neural response of the right Heschl's gyrus. The results support previous studies that have observed enhanced precision of sensory evidence whilst participants attempted to represent and respond to higher degrees of uncertainty, and converge with evidence showing preferential processing of complex spectral information in the right primary auditory cortex. These findings are discussed with respect to music-theoretical concepts and recent Bayesian models of perception, which have proposed that attention may heighten the weight of information coming from sensory channels to stimulate learning about unknown predictive relationships. |
| Databáze: | OpenAIRE |
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