Sensor pixel for neural recording

[justanengineer]

I am wondering if instead of using a MicroElectrode Array (MEA) for neural recording, we can use some different circuits like: Voltage to frequency Converter or Digital sensors that are connected directly to the electrode
Ps: the array of electrodes have pitch around 10x10microm^2.

Thanks in advance.

[pebe]

It would help if we knew why you feel the existing sensors need to be improved, and what sort of device you intend to use to read them.