使用短暂的,效应器特定的神经反应对大脑-计算机接口的网关解码
Brian M Dekleva1,2,3, Jennifer L Collinger1,2,4,3,5
1Rehab Neural Engineering Labs, University of Pittsburgh, Pittsburgh, PA, United States of America.
Journal of neural engineering
|January 14, 2025
概括
这项研究引入了一种新的脑计算机接口 (BCI) 解码方法,使用短暂的神经信号来改善连续设备控制. 这种方法增强了解码器通用化,为更自然和可靠的真实世界BCI应用程序提供了更好的解决方案.
科学领域:
- 神经科学是一个神经科学.
- 生物医学工程 生物医学工程
- 康复工程 康复工程
背景情况:
- 大脑-计算机接口 (BCI) 需要异步解码来实现自然控制.
- 神经解码面临的挑战是由于非静止的皮质活动和上下文依赖的神经行为关系.
- 可通用解码对于现实世界的BCI应用至关重要.
研究的目的:
- 开发一种方法来简化BCI中的连续解码.
- 为了应对跨不同行为背景的解码器概括的挑战.
- 通过使用BCI来实现可靠和直观的设备控制.
主要方法:
- 开发了一种短暂的,特定于终端效应器的神经反应检测方法.
- 在动作开始/抵消时利用了人口响应的短暂变量来解码门功能.
- 应用了基于瞬态的网关方法来简化解码模型并减少交叉效应干扰.
主要成果:
- 实现了高质量的在线解码握力和个人手指控制.
- 在多个行为范式中证明了封闭式方法的有效性.
- 在涉及手和手臂联合控制的任务中展示了显著的好处,减少了输出变化.
结论:
- 拟议的基于瞬态的网关方法增强了跨语境的解码器概括性.
- 将解码限制在已识别的效应器参与期间,支持可靠的BCI控制.
- 这种方法对推进现实世界的BCI应用有前途.
相关概念视频
The Synapse
Neurons communicate with one another by passing on their electrical signals to other neurons. A synapse is the location where two neurons meet to exchange signals. At the synapse, the neuron that sends the signal is called the presynaptic cell, while the neuron that receives the message is called the postsynaptic cell. Note that most neurons can be both presynaptic and postsynaptic, as they both transmit and receive information.
Synaptic Signaling
Neurons communicate at synapses, or junctions, to excite or inhibit the activity of other neurons or target cells, such as muscles. Synapses may be chemical or electrical.
Most synapses are chemical, meaning an electrical impulse or action potential spurs the release of chemical messengers called neurotransmitters. The neuron sending the signal is called the presynaptic neuron, and the neuron receiving the signal is the postsynaptic neuron.
The presynaptic neuron fires an action potential that...
Most synapses are chemical, meaning an electrical impulse or action potential spurs the release of chemical messengers called neurotransmitters. The neuron sending the signal is called the presynaptic neuron, and the neuron receiving the signal is the postsynaptic neuron.
The presynaptic neuron fires an action potential that...
Chemical Synapses
Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Ligand-Gated Ion Channel Receptor: Gating Mechanism
Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
Chemical Synapses
Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Neuronal Communication
Neurons, the fundamental units of the brain and nervous system, communicate through complex electrochemical signals that underpin all cognitive and bodily functions. This communication is primarily facilitated by a process involving the generation and propagation of an action potential along the axon of the neuron. When the internal electrical charge of a neuron surpasses a certain threshold, an action potential is triggered. This rapid change in voltage travels swiftly along the axon to the...


