摘要:
Brain-computer interface (“BCI”) systems that provide paralyzed individuals with more meaningful autonomy and independence. Including BCI systems used by an individual that requires less assistance from, or even in the absence of, a care giver, BCI systems that provide an objective and functional measurement of the effectiveness of a motor neuroprostheses in restoring motor outputs.
摘要:
A method of operating a biological interface is disclosed. The method may include obtaining an input physiological or neural signal from a subject, acquiring an input set of values from the input signal, obtaining a predictive signal from the subject or the environment, acquiring a predictive set of values from the predictive signal, training a decoder function in response to data from the predictive set of values, performing at least one calculation on the input set of values using the decoder function to produce an output set of values, and operating a device with the output set of values. A biological interface system is also disclosed. The biological interface system may contain an input signal sensor, an input signal processor, a predictive signal processor, a memory device storing data, and a system processor coupled to the memory device and configured to execute a decoder function.
摘要:
A tunable homojunction field effect device-based artificial synapse circuit includes a first tunable homojunction field effect device M1, a second tunable homojunction field effect device M2, a third tunable homojunction field effect device M3, and a capacitor C; the tunable homojunction field effect device can exhibit the electrical properties of NN junction, PP junction, PN junction, and NP junction under the control of gate voltage; in the circuit, whether the device M2 and the device M3 are turned on rely on the combined action of presynaptic pulse and postsynaptic pulse; compared with the circuit structure of a traditional CMOS circuit scheme which exhibits neural synaptic functions of spike-time-dependent plasticity and continuously adjustable pulse-to-synaptic weight, the circuit in the present solution requires a greatly reduced number of devices and shows the feature of reconfigurable function, exhibiting a great advantage in constructing low-power, high-density integrated bionic chips for future neuromorphic applications.
摘要:
One embodiment of the invention provides a system for mapping a neural network onto a neurosynaptic substrate. The system comprises a metadata analysis unit for analyzing metadata information associated with one or more portions of an adjacency matrix representation of the neural network, and a mapping unit for mapping the one or more portions of the matrix representation onto the neurosynaptic substrate based on the metadata information.
摘要:
An integrated circuit processor having a processing unit that includes a logical circuit with multiple transistors and a top metal landing pad, and an embedded STT memory. The STT memory includes a dielectric layer formed on the top metal landing pad, an adhesion and topography planarization (ATP) layer formed on the dielectric layer, and an MTJ film layer disposed on the ATP layer. The memory may also include bit lines formed on the MTJ film layer. The ATP layer may have multiple layers such as a top layer and a bottom layer. The top layer may act as an etch stop for etching the MTJ film layer on the top. The ATP layer may have a total thickness of 500 A to 4000 A. The bit lines can be configured to send data to the logic circuit of the processing unit to perform one or more convolution neural network computations.
摘要:
A decision support tool for development of drugs targeting central nervous system conditions. The tool receives measurements made on subjects, which are converted to model outputs using neurocircuitry models. The models are used by a computing device to generate neuro-circuitry based signatures. Neuro-circuitry based signatures associated with an investigational compound may be compared to reference neuro-circuitry based signatures to identify parameters of a clinical trial protocol. The neuro-circuitry based signature comparisons, when generated based on measurement data collected in early phases of a clinical trial process, may increase the likelihood that the investigational compound will quickly and cost-effectively emerge from clinical trials with proof that the investigational compound is effective for treating one or more CNS conditions. The decision support tool may also indicate early phase measurements to make based on a condition against which an investigational compound is theorized to be effective against.
摘要:
A neural system comprises multiple neurons interconnected via synapse devices. Each neuron integrates input signals arriving on its dendrite, generates a spike in response to the integrated input signals exceeding a threshold, and sends the spike to the interconnected neurons via its axon. The system further includes multiple noruens, each noruen is interconnected via the interconnect network with those neurons that the noruen's corresponding neuron sends its axon to. Each noruen integrates input spikes from connected spiking neurons and generates a spike in response to the integrated input spikes exceeding a threshold. There can be one noruen for every corresponding neuron. For a first neuron connected via its axon via a synapse to dendrite of a second neuron, a noruen corresponding to the second neuron is connected via its axon through the same synapse to dendrite of the noruen corresponding to the first neuron.
摘要:
In one embodiment, the present invention provides a method comprising propagating a first set and a second set of axonal firing events through a symmetric core circuit in a first direction and a second direction, respectively. The symmetric core circuit comprises a first core module and a second core module, and each core module comprises an interconnection network for interconnecting multiple electronic neurons with multiple electronic axons. The method further comprises, for at least one neuron, receiving an axonal firing event via an interconnected axon, and, for at least one neuron, generating a neuronal firing event according to a neuronal activation function. Each core module of the symmetric core circuit has a corresponding adaptive lookup table, the corresponding adaptive lookup table used to determine target axons for neuronal firing events generated by neurons in the core module.
摘要:
A pattern recognition system having a plurality of sensors, a plurality of first activation cells wherein ones of the first activation cells are connected to one or more of the sensors, a plurality of second activation cells, wherein overlapping subsets of the first activation cells are connected to ones of the second activation cells, and an output for summing at least outputs from a subset of the plurality of second activation cells to produce a result.
摘要:
Electronic components, including a transceiver (220) for two-way wireless communications, are carried by a freely roaming animal (190) such as a rat. Electrodes are implanted in the brain of the animal to provide cues and rewards to the animal to achieved desired behaviors, including controlling the direction and speed of movement of the animal, and training the animal to recognize odors. Network interface components (265) allow a network of the animals to work together. Sensors (225, 230, 235, 245, 255, 260) carried by the animal provide information to a remote base station regarding, e.g., heading and location. Chemical or gas sensors, along with a video camera and a microphone provide information regarding an environment of the animal. The animal can search for people buried in rubble piles, and detect explosives, chemicals or other dangerous materials. A vehicle (500) for deploying the animal is also provided.