![]() ![]() While stimulating with sequences of pure tones, isolated neurons were recorded from three auditory nuclei of anesthetized rats: IC, MGB and AC (colored). ![]() These results demonstrate that prediction error is a fundamental component of singly auditory neuron responses.Įxperimental design. Finally, the predictive activity of single auditory neurons underlies automatic deviance detection at subcortical levels of processing. ![]() These prediction error signals are detectable in subcortical regions and increase as the signals move towards auditory cortex, which in turn demonstrates a large-scale mismatch potential. Here we report that prediction error is organized hierarchically along the central auditory pathway. We recorded single-neuron activity from different auditory centers in anaesthetized rats and awake mice while animals were played a sequence of sounds, designed to separate the responses due to prediction error from those due to adaptation effects. However, the relationship between such sensory mismatch responses and hierarchical predictive processing has not yet been demonstrated at the neuronal level in the auditory pathway. is characterized by a reciprocal exchange of predictions and prediction error signals between neural regions. 8 Department of Cell Biology and Pathology, Faculty of Medicine, University of Salamanca, Salamanca, 37007, Castilla y León, Spain. 7 The Salamanca Institute for Biomedical Research (IBSAL), Salamanca, 37007, Castilla y León, Spain. 6 Auditory Neuroscience Laboratory, Institute of Neuroscience of Castilla y León (INCYL), Salamanca, 37007, Castilla y León, Spain.5 Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, 08950, Catalonia, Spain.4 Institute of Neurosciences, University of Barcelona, Barcelona, 08035, Catalonia, Spain.3 Brainlab-Cognitive Neuroscience Research Group, Department of Clinical Psychology and Psychobiology, University of Barcelona, Barcelona, 08035, Catalonia, Spain.2 The Salamanca Institute for Biomedical Research (IBSAL), Salamanca, 37007, Castilla y León, Spain.1 Auditory Neuroscience Laboratory, Institute of Neuroscience of Castilla y León (INCYL), Salamanca, 37007, Castilla y León, Spain. ![]()
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