Kenichi Ohki

The paper reconstructs growth cones of callosal projection neurons in the developing mouse brain and finds they have a planar, dorsoventrally oriented morphology with filopodia that precede accelerated axon growth.

This study shows that rapid associative spine enlargement is necessary for maintaining cognitive function and stable wakefulness in mice.

The paper investigates how spontaneous and stimulus-driven activity are orthogonalized in primate visual cortex, finding that this process occurs hierarchically across cortical areas.

The paper develops a method to record spine calcium responses without BAP signals and reveals three dendritic functional architectures of synaptic inputs in visual cortical neurons.

The paper identifies omission-responsive neurons in rat auditory cortex that encode negative prediction error and probability, showing an asymmetry in error signaling.

ARViS enables precise, fast, and dense viral injection in mouse and marmoset brains with minimal bleeding, facilitating biosensor expression for imaging studies.

This study investigates how motor direction representation changes in primate premotor and primary motor cortices during learning, finding that PMdc neurons dynamically adjust their preferred direction while M1 neurons maintain stability.

This study shows that spontaneous network activity during a critical period is necessary for callosal axon projections in the mouse visual cortex, but not fully synchronous activity.

The paper identifies distinct response properties and local subnetworks in callosal projection neurons in mouse visual cortex, showing their connectivity and functional biases.

The paper shows that natural images can be decoded from a small number of highly responsive neurons in V1, with reliable representation supported by overlapping receptive fields.

The paper uses convolutional neural networks to estimate nonlinear receptive fields of visual neurons, showing they can capture complex nonlinearities like shift and rotation invariance.

The paper investigates visual responses of astrocytes in the mouse visual cortex and finds they respond with a 5-second delay relative to neurons.

The paper investigates the neuronal origin of dynamic functional connectivity by comparing neuronal calcium and hemodynamic signals in mice, showing their coordinated temporal dynamics and the role of transient coactivation patterns.