Method and apparatus with neural recording
AssigneeSamsung Electronics Co., Ltd.
InventorsNahm il Koo, Chisung Bae
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Abstract
A neural recording apparatus including an electrode array including a plurality of electrodes configured to detect voltage signals of one or more neurons and a reference electrode configured to detect a reference signal, a regulator configured to regulate the reference signal, a plurality of transconductance circuits configured to generate current signals by performing transconductance based on the voltage signals and the regulated reference signal, a multiplexer (MUX) configured to multiplex on the generated current signals, and an analog-to-digital converter (ADC) configured to convert the multiplexed current signals into a digital signal.
Claims20
A neural recording apparatus, the apparatus comprising:
- an electrode array comprising:
- a plurality of electrodes configured to respectively detect voltage signals of one or more neurons;
- and
- a reference electrode configured to detect a reference signal of a neuron;
- a regulator configured to regulate the reference signal;
- transconductance circuits configured to generate respective current signals by performing transconductance based on multiple voltage signals, of the detected voltage signals, and the regulated reference signal;
- a first multiplexer (MUX) configured to multiplex the current signals;
- and
- an analog-to-digital converter (ADC) configured to convert the multiplexed current signals into a digital signal,
- wherein each of the transconductance circuits comprises:
- a transistor configured to perform the transconductance;
- and
- a capacitor connected to the transistor, and
- wherein the regulator is configured to apply the regulated reference signal to the transistor of each of the transconductance circuits as a source voltage.
A neural recording apparatus, the apparatus comprising:
- an electrode array comprising:
- a plurality of electrodes configured to respectively detect voltage signals of one or more neurons;
- and
- a reference electrode configured to detect a reference signal of a neuron;
- a regulator configured to regulate the reference signal;
- transconductance circuits configured to generate current signals by performing transconductance based on multiple voltage signals, of the detected voltage signals, and the regulated reference signal;
- an analog-to-digital converter (ADC);
- a plurality of switches positioned between the transconductance circuits and the ADC;
- and
- a control circuit configured to turn on a switch of each of the transconductance circuits that generates the current signals corresponding to a same neuron among the plurality of switches so that current signals corresponding to the same neuron among the current signals are merged and input to the ADC,
- wherein each of the transconductance circuits comprises:
- a transistor configured to perform the transconductance;
- and
- a capacitor connected to the transistor, and
- wherein the regulator is configured to apply the regulated reference signal to the transistor of each of the transconductance circuits as a source voltage.
A method of operating a neural recording apparatus, the method comprising:
- detecting voltage signals of one or more neurons and a reference signal of a neuron through an electrode array;
- generating current signals by performing respective transconductances on the detected voltage signals, each transconductance being based on the reference signal;
- performing multiplexing on the current signals through a multiplexer (MUX);
- and
- converting the multiplexed current signals into a digital signal through an analog-to-digital converter (ADC).
Dependencies are inferred from the claim text.