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Poster Session B: Wednesday, August 13, 1:00 – 4:00 pm, de Brug & E‑Hall

Single-Neuron Evidence for Attention and Prediction Error to Nested Auditory Regularities in the Human Auditory Cortex

Vinicius Rezende Carvalho¹, Santiago Collavini², Alejandro Nasimbera, Silvia Kochen, Anne-Kristin Solbakk, Alejandro O Blenkmann; ¹University of Oslo, ²Consejo Nacional de Investigaciones Científicas y Técnicas

Presenter: Vinicius Rezende Carvalho

The primary auditory cortex has traditionally been viewed as a feature detector rather than a processor of complex statistical regularities. We present rare single-neuron recordings from the human transverse temporal gyrus (TTG) during a Global-Local paradigm with nested temporal regularities. Time-resolved modeling of neural responses revealed that TTG neurons are sensitive to local deviance and its interaction with global task context, with this activity strongly modulated by attention. Notably, we observed super-additive responses to combined local-global deviants and relatively late response latencies (~200ms), suggesting complex integration of predictive signals rather than simple feature detection. These findings provide direct neuronal evidence for hierarchical processing at the earliest cortical stage of auditory processing, consistent with theoretical models that emphasize context integration and prediction in perception.

Topic Area: Predictive Processing & Cognitive Control

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