Pietro Marchesi

Apr 18, 2024 | biorxiv.org | Pietro Marchesi |Jeroen Bos |Martin Vinck |Cyriel M. A. Pennartz

AbstractCompressed hippocampal place-cell sequences have been associated with memory storage, retrieval and planning, but it remains unclear how they align with activity in the parahippocampal cortex. In a visuospatial discrimination task, we found a wide repertoire of hippocampal place cell sequences, which recapitulated paths across the task environment.

Feb 2, 2024 | nature.com | Pietro Marchesi |Umberto Olcese

AbstractPrimary sensory cortices respond to crossmodal stimuli—for example, auditory responses are found in primary visual cortex (V1). However, it remains unclear whether these responses reflect sensory inputs or behavioral modulation through sound-evoked body movement. We address this controversy by showing that sound-evoked activity in V1 of awake mice can be dissociated into auditory and behavioral components with distinct spatiotemporal profiles.

Jul 29, 2023 | psiquiatria.com | Pietro Marchesi

Las neuronas en la corteza visual primaria (V1) pueden no solo señalar la entrada visual actual, sino también información contextual relevante, como la expectativa de recompensa y la posición espacial del sujeto. Tales representaciones contextuales no necesitan estar restringidas a V1 sino que podrían participar en un mapeo coherente a lo largo de las cortezas sensoriales.

May 24, 2023 | biorxiv.org | Pietro Marchesi |Julien Fiorilli |Thijs Ruikes |Gerjan Huis

AbstractNeural circuits support behavioral adaptations by integrating sensory and motor information with reward and error-driven learning signals, but it remains poorly understood how these signals are distributed across different levels of the corticohippocampal hierarchy.