Intracranial recordings show evidence of numerosity tuning in human parietal cortex

Jelle A van Dijk, Maartje C de Jong, Gio Piantoni, Alessio Fracasso, Mariska J Vansteensel, Iris I A Groen, Natalia Petridou, Serge O Dumoulin

Onderzoeksoutput: Bijdrage aan wetenschappelijk tijdschrift/periodieke uitgaveArtikelWetenschappelijkpeer review

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Numerosity is the set size of a group of items. Numerosity perception is a trait shared across numerous species. Numerosity-selective neural populations are thought to underlie numerosity perception. These neurons have been identified primarily using electrical recordings in animal models and blood oxygen level dependent (BOLD) functional magnetic resonance imaging (fMRI) in humans. Here we use electrical intracranial recordings to investigate numerosity tuning in humans, focusing on high-frequency transient activations. These recordings combine a high spatial and temporal resolution and can bridge the gap between animal models and human recordings. In line with previous studies, we find numerosity-tuned responses at parietal sites in two out of three participants. Neuronal populations at these locations did not respond to other visual stimuli, i.e. faces, houses, and letters, in contrast to several occipital sites. Our findings further corroborate the specificity of numerosity tuning of in parietal cortex, and further link fMRI results and electrophysiological recordings.

Originele taal-2Engels
Pagina's (van-tot)e0272087
TijdschriftPLoS ONE
Volume17
Nummer van het tijdschrift8
DOI's
StatusGepubliceerd - 2022

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