Topic: supragranular layers

Selective processing of relevant aspects of our environment is crucial for goal-directed behavior. In the visual cortex, neurons encoding attended stimuli show synchronized activity within the γ-frequency band (30 – 100 Hz). Given this rhythmic nature of neuronal activity, with alternating phases of enhanced and diminished excitability, effective information transmission should not only necessitate synchronization of oscillatory activity but should critically depend on the phase difference between sender- and receiver neurons’ γ-activity. To test this, we simultaneously recorded neuronal activ

Understanding how our brain integrates information across the visual space is crucial for understanding how visual information is encoded. In the supragranular and infragranular layers of the primary visual cortex (V1) of higher mammals, orientation-biased horizontal connections span several millimeters and connect neurons that encode different portions of the visual space [1], while connections in the granular layers remain local.We presented disks of varying radii and annuli of varying inner radii to anesthetized cats to investigate laminar differences in spatial integration of the stimuli i

We present a 3D multi-shank linear electrode array for semichronic laminar neural recording in drug-resistant epilepsy patients. The 3D array comprises nine parallel shanks (3x3, lateral spacing: 1 mm) fixed on a 4.5x4.5 mm PEEK platform. An individual shank (185 μm OD) has a conical-shaped taper and contains 16 or 24 recording sites (15 μm OD microwires, Pt/Ir–90/10%; inter-site distances may vary between 50–200 μm). The microwires provide an uninterrupted connection between the recording sites and a PCB with Omnetics connectors for headstage input. The 3D array allows for easy and quick oper