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Pro Palestina

Speaker name

Yaneri Aguilar Ayala

Institutional affiliation

Neurosurgery Department, Hospitals and Clinics, University of Iowa.

Jueves 14 de noviembre 2024, 12:20 - 14:20

Neural signals of prediction and memory in human and non-human primates

Abstact

Our cortical circuits integrate sensory signals as well as memory and prediction signals that allow us to modify or generalize behaviors in a flexible manner. The algorithms and dynamics of activation of these brain circuits have been little studied during the use of auditory information to guide our behavior, as occurs during language or music production. To contribute to the understanding of these processes, I will present two extracellular electrophysiology studies that interrogate cortical circuits during the processing of auditory sequences. The first study addresses the activation of rhesus monkey auditory cortexes during synchronization of hand movements to isochronous sequences of sounds. The second paper studies the activation of the prefrontal cortex in humans during the manipulation of word sequences in a working memory task. In both studies, a context-dependent segregation is observed in the activation of neuron populations and field potentials across cortical layers, i.e., when the subject perceives, mentally manipulates or produces the auditory sequences. Likewise, predictive and memory signals are exhibited by specific sets of cortical neurons whose location and activation dynamics will be evaluated in the context of active predictive coding theories and canonical models of interlaminar processing. Finally, the importance of comparative studies on active sets to dissect the algorithms that make human cognition unique will be discussed.

Semblance

Neurophysiologist from Oaxaca, Mexico, who has studied the functioning of the nervous system from the processing of sensory signals to their integration with predictive and memory signals to guide behavior. She obtained a degree in Biomedicine at BUAP and postgraduate degrees at the University of Seville and Salamanca, Spain, with research stays at the University of Connecticut, USA and at the Max Planck Institute for Experimental Medicine in Göttingen, Germany. Subsequently, she was a postdoctoral fellow at the Institute of Neurobiology of the UNAM in the area of systems neurophysiology. She is currently doing a second postdoctoral stay at the Department of Neurosurgery at the University of Iowa, USA, performing electrophysiology of cortical and subcortical circuits in humans to investigate prediction, memory and language processes. His scientific interests revolve around developing multidisciplinary research where human cognition is tested in more naturalistic conditions with free movement.

Centro de Investigación en Ciencias Cognitivas

Universidad Autónoma del Estado de Morelos

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Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos, C.P. 62209

Tel. (777) 3 29 7000 ext. 2240 y 3762

cincco@uaem.mx

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