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Topic: Single unit recordings

Seminar
3 seminars
Seminar · Electrophysiology

The medial prefrontal cortex replays generalized sequences

Karola Käfer · Institute of Science and Technology Austria

Wed, Jan 11, 2023 · 17:00 UTC

Whilst spatial navigation is a function ascribed to the hippocampus, flexibly adapting to a change in rule depends on the medial prefrontal cortex (mPFC). Single-units were recorded from the hippocampus and mPFC of rats shifting between a spatially- and cue-guided rule on a plus-maze. The mPFC population coded for the relative position between start and goal arm. During awake immobility periods, the mPFC replayed organized sequences of generalized positions which positively correlated with rule-switching performance. Conversely, hippocampal replay negatively correlated with performance and occ

Seminar · Electrophysiology

A no-report paradigm reveals that face cells multiplex consciously perceived and suppressed stimuli

Janis Hesse · California Institute of Technology

Fri, Feb 26, 2021 · 18:00 UTC

Having conscious experience is arguably the most important reason why it matters to us whether we are alive or dead. A powerful paradigm to identify neural correlates of consciousness is binocular rivalry, wherein a constant visual stimulus evokes a varying conscious percept. It has recently been suggested that activity modulations observed during rivalry may represent the act of report rather than the conscious percept itself. Here, we performed single-unit recordings from face patches in macaque inferotemporal (IT) cortex using a novel no-report paradigm in which the animal’s conscious perce

Seminar · Brain Imaging

Understanding sensorimotor control at global and local scales

Kelly Clancy · DeepMind

Fri, Oct 9, 2020 · 11:40 UTC

The brain is remarkably flexible, and appears to instantly reconfigure its processing depending on what’s needed to solve a task at hand: fMRI studies indicate that distal brain areas appear to fluidly couple and decouple with one another depending on behavioral context. We investigated how the brain coordinates its activity across areas to inform complex, top-down control behaviors. Animals were trained to perform a novel brain machine interface task to guide a visual cursor to a reward zone, using activity recorded with widefield calcium imaging. This allowed us to screen for cortical areas

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