Search results for "microprocessors"

showing 3 items of 3 documents

Sequence Learning in a Single Trial: A Spiking Neurons Model Based on Hippocampal Circuitry.

2020

ABSTRACTIn contrast with our everyday experience using brain circuits, it can take a prohibitively long time to train a computational system to produce the correct sequence of outputs in the presence of a series of inputs. This suggests that something important is missing in the way in which models are trying to reproduce basic cognitive functions. In this work, we introduce a new neuronal network architecture that is able to learn, in a single trial, an arbitrary long sequence of any known objects. The key point of the model is the explicit use of mechanisms and circuitry observed in the hippocampus, which allow the model to reach a level of efficiency and accuracy that, to the best of our…

Computer Networks and CommunicationsComputer scienceModels NeurologicalHippocampusAction PotentialsBrain modeling; Computer architecture; Hippocampus; Learning systems; Microprocessors; Navigation; Neurons; Persistent firing (PF); robot navigation; spike-timing-dependent-plasticity synapse; spiking neurons.Hippocampal formationHippocampus03 medical and health sciences0302 clinical medicineArtificial IntelligenceBiological neural network030304 developmental biologyNeurons0303 health sciencesSequenceSeries (mathematics)business.industryBasic cognitive functionsContrast (statistics)CognitionComputer Science ApplicationsSequence learningArtificial intelligenceNeural Networks ComputerbusinessSoftware030217 neurology & neurosurgeryIEEE transactions on neural networks and learning systems
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Exploring FPGA‐Based Lock‐In Techniques for Brain  Monitoring Applications

2017

Functional near‐infrared spectroscopy (fNIRS) systems for e‐health applications usually suffer from poor signal detection, mainly due to a low end‐to‐end signal‐to‐noise ratio of the electronics chain. Lock‐in amplifiers (LIA) historically represent a powerful technique helping to improve performance in such circumstances. In this work a digital LIA system, based on a Zynq® field programmable gate array (FPGA) has been designed and implemented, in an attempt to explore if this technique might improve fNIRS system performance. More broadly, FPGA‐based solution flexibility has been investigated, with particular emphasis applied to digital filter parameters, needed in the digital LIA, and its …

Engineeringhardware description language (HDL) near‐infrared  spectroscopy (NIRS)light emitting diode (LED)Computer Networks and Communicationslcsh:TK7800-836002 engineering and technologysilicon photomultiplier (SiPM)Settore ING-INF/01 - Elettronica01 natural sciencesSignaldigital lock‐in amplifier (DLIA)law.invention hardware description language (HDL)microprocessorslawVHDL0202 electrical engineering electronic engineering information engineeringElectronic engineeringDetection theoryElectrical and Electronic EngineeringField-programmable gate arraycomputer.programming_languagebusiness.industryNoise (signal processing)lcsh:Electronics010401 analytical chemistryEmphasis (telecommunications)near‐infrared spectroscopy (NIRS)020206 networking & telecommunications0104 chemical sciences light emitting diode (LED) microprocessorsfield programmable gate array (FPGA)Microprocessordigital lock‐in amplifier (DLIA)Hardware and ArchitectureControl and Systems EngineeringSignal Processingbusinessdigital lock‐in amplifier (DLIA); field programmable gate array (FPGA); near‐infrared  spectroscopy (NIRS); hardware description language (HDL); light emitting diode (LED); silicon  photomultiplier (SiPM); microprocessors field programmable gate array (FPGA) silicon  photomultiplier (SiPM)Digital filtercomputerComputer hardwareElectronics
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A Portable Readout System for Microstrip Silicon Sensors (ALIBAVA)

2009

A readout system for microstrip silicon sensors has been developed. This system is able to measure the collected charge in one or two microstrip silicon sensors by reading out all the channels of the sensor(s), up to 256. The system can operate either with non-irradiated and irradiated sensors as well as with n-type and p-type microstrip silicon sensors. Heavily irradiated sensors will be used at the Super Large Hadron Collider, so this system can be used to research the performance of microstrip silicon sensors in conditions as similar as possible to the Super Large Hadron Collider operating conditions. The system has two main parts: a hardware part and a software part. The hardware part a…

Nuclear and High Energy PhysicsEngineeringanalog processing circuitsMotherboardPhysics::Instrumentation and DetectorsInterface (computing)Analog-digital conversionFPGAshigh energy physics instrumentationUSBMicrostripChargelaw.inventionCharge sensitive amplifiersData acquisitionmicroprocessorslawlogic designElectrical and Electronic Engineeringdetector instrumentationtime to digitalbusiness.industryReading (computer)electronicsDetectorElectrical engineeringConvertersCollectionsfront-end electronicssemiconductor detectorsNuclear Energy and Engineeringdata acquisition systemsdigital integrated circuitsbusinessDaughterboard
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