Development of coherent cortical responses reflects increased discriminability of feedforward inputs and their alignment with recurrent circuits
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View abstract on PubMed
Summary
This summary is machine-generated.Visual cortex development relies on experience. Sensory processing in layer 4 (L4) neurons and layer 2/3 (L2/3) circuits becomes more specific with visual experience, improving orientation representation.
Area Of Science
- Neuroscience
- Computational Neuroscience
- Systems Neuroscience
Background
- Sensory cortices transform inputs into reliable neural activity for behavior.
- Layer 4 (L4) neurons in the visual cortex connect to layer 2/3 (L2/3) modules, crucial for orientation representation.
- The developmental mechanisms underlying this reliable sensory representation are not fully understood.
Purpose Of The Study
- To investigate the developmental trajectory of orientation selectivity in the visual cortex.
- To elucidate the roles of feedforward inputs and recurrent interactions in shaping sensory representations.
- To understand how experience refines neural circuits for behavior.
Main Methods
- Electrophysiology and calcium imaging in vivo.
- Computational modeling of neural network dynamics.
- Whole-cell recordings to analyze neuronal responses.
Main Results
- Visually naive animals show poor orientation specificity in L4-L2/3 coactivity.
- Orientation discriminability in L4 improves with visual experience.
- Misaligned feedforward-recurrent interactions significantly impact developmental tuning dynamics.
Conclusions
- Experience enhances L4 input discriminability and alignment with L2/3 recurrent interactions.
- These developmental changes are critical for establishing reliable sensory representations.
- Laminar-temporal coherence in sensory processing emerges through experience-dependent circuit refinement.
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