Related Experiment Video
Updated: Jul 1, 2026
05:05
Assessing Corticospinal Excitability During Goal-Directed Reaching Behavior
Published on: December 2, 2022
Retrosplenial cortex enables context-dependent goal-directed sensorimotor transformation
Pol Bech1, Robin F Dard1, Jules Lebert1
1Laboratory of Sensory Processing, Brain Mind Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
Elife
|June 29, 2026
Summary
Mice learned to adjust whisker responses based on context cues. The retrosplenial cortex (RSC) plays a key role in this context-dependent sensory processing, integrating information before other cortical areas.
Area of Science:
- Neuroscience
- Sensory Processing
- Behavioral Neuroscience
Background:
- Dynamic adjustment of behavioral responses to stimuli based on context is crucial for animal survival.
- Understanding the neural mechanisms of context-dependent sensory processing is essential.
Purpose of the Study:
- To investigate the neural basis of context-dependent sensory processing.
- To identify brain regions involved in integrating contextual cues with sensory information.
Main Methods:
- Developed a behavioral task where mice modified whisker deflection responses based on a continuous contextual cue.
- Utilized unbiased optogenetic inactivation mapping to identify task-relevant brain regions.
- Employed widefield calcium imaging to observe neuronal activity patterns.
- Combined optogenetic inactivation with calcium imaging to establish causal links.
Main Results:
- Neuronal activity in sensory and motor cortices was vital for task execution.
- The retrosplenial cortex (RSC) unexpectedly showed a significant role in contextual integration.
- RSC was the earliest dorsal cortical area to exhibit context discrimination following whisker stimulation.
- Whisker motor cortex activity followed RSC in context discrimination.
Conclusions:
- Identified key cortical nodes involved in context-dependent sensorimotor transformation.
- Highlighted the retrosplenial cortex as a critical area for contextual integration in sensory processing.
- Provided causal evidence for the role of RSC in sensorimotor processing influenced by context.
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