Do Corollary Discharges Contain Information About the Volume of Inner Speech? An ERP Study.

IF 3.1 3区 医学 Q2 NEUROSCIENCES Journal of Cognitive Neuroscience Pub Date : 2025-03-14 DOI:10.1162/jocn_a_02318
Kevin Berryman, Thomas J Whitford, Mike E Le Pelley, Bradley N Jack
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引用次数: 0

Abstract

When we move our articulator organs to produce overt speech, the brain generates a corollary discharge that acts to suppress the neural and perceptual responses to our speech sounds. Recent research shows that inner speech-the silent production of words in one's mind-is accompanied by a corollary discharge that contains information about the timing and content of inner speech. The aim of the present study was to determine whether this corollary discharge contains information about the volume of inner speech. To investigate this, participants watched an animation that provided them with precise knowledge about when they should produce a "loud" or "quiet" inner sound. At the same time, they heard an audible sound that was either similar or dissimilar to the volume of the inner sound. We found that producing the inner sound attenuated the N1-an ERP signature of auditory processing-and enhanced the slow negative wave-an ERP signature of anticipation and motor preparation-compared with listening, regardless of whether the volume of the inner sound was similar or dissimilar to the audible sound. We also found that the volume of the inner sound did not differentially modulate the N1 or slow negative wave, respectively. We speculate that this might be because one of the functions of corollary discharge is to protect our auditory receptors from desensitization caused by audible sounds, and this might be redundant in the context of inner speech because inner speech does not produce an audible sound. We conclude that there is a functional difference between the neural processes that underlie the production of inner and overt speech.

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来源期刊
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience 医学-神经科学
CiteScore
5.30
自引率
3.10%
发文量
151
审稿时长
3-8 weeks
期刊介绍: Journal of Cognitive Neuroscience investigates brain–behavior interaction and promotes lively interchange among the mind sciences.
期刊最新文献
Action-effect Prediction in Volitional and Stimulus-driven Movement: Investigating Sensory Attenuation and Misprediction Sensitivity. Do Corollary Discharges Contain Information About the Volume of Inner Speech? An ERP Study. High-frequency Repetitive Transcranial Magnetic Stimulation over the Left Dorsolateral Prefrontal Cortex Can Improve Attentional Control Under Stress: Behavioral and Electrophysiological Evidence. The Role of Syntactic and Semantic Cues in Preventing Temporary Illusions of Plausibility. Theta Stimulation Enhances Early Consolidation of Semantic Memory.
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