通过集成的神经形态架构实现芯片上Hebbian学习的硬件实现
Seonkwon Kim1, Seongil Im1,2, In Cheol Kwak1
1Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea.
Advanced materials (Deerfield Beach, Fla.)
|June 25, 2025
概括
这项研究介绍了一种用于神经形态计算的新型人工神经平台,展示了有效的芯片上Hebbian学习. 该系统可实现实时突触重量修改,解决传统计算架构中的关键挑战.
科学领域:
- 神经形态工程的神经形态工程
- 材料科学 材料科学 材料科学
- 计算机架构 计算机架构
背景情况:
- 传统计算由于·诺伊曼瓶和高能耗而面临局限性.
- 神经形态计算提供了一个有前途的替代方案,但高效的芯片上学习仍然是一个重大障碍.
- 开发模仿生物神经学习的硬件对于下一代计算至关重要.
研究的目的:
- 展示一个新的人工神经平台,集成先进的组件,以实现高效的芯片上学习.
- 通过基于关联的学习原则来演示实时的突触重量修改.
- 为了验证平台对Hebbian学习硬件实现的能力.
主要方法:
- 集成调制优化的前突触晶体管,值切换的memristor神经元和自适应反突触.
- 通过基于关联的学习来实时描述突触重量修饰.
- 对6x6阵列配置的系统评估,以确认稳定的设备操作和本地学习规则.
主要成果:
- 在没有广泛的外围电路的情况下,在硬件中成功实现了Hebbian学习原理.
- 在输入输出信号和随后的突触重量修改之间证明了相关性.
- 在集成平台内确认稳定的设备操作和有效的本地学习规则.
结论:
- 开发的人工神经平台为在神经形态系统中硬件实现Hebbian学习提供了可行的途径.
- 这种方法解决了芯片上学习的挑战,为更高效和脑启发的计算铺平了道路.
- 新型组件的协同集成为神经形态硬件设计提供了显著的进步.
相关概念视频
01:26Higher Mental Functions of Brain: Learning and Memory
976
Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
976
01:25Neural Circuits
1.6K
Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
1.6K
01:21Cognitive Learning
668
Cognitive learning is based on purposive behavior, incidental learning, and insight learning.
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
Tolman introduced the idea that behavior is influenced by...
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
Tolman introduced the idea that behavior is influenced by...
668
01:25Long-term Potentiation
2.9K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when...
Hebbian LTP
LTP can occur when...
2.9K
01:28Integration of Synaptic Events
2.2K
Synaptic integration mainly includes the summation of graded potentials. Graded potentials, regardless of their type, cause subtle alterations in membrane voltage, resulting in either depolarization or hyperpolarization. These incremental changes, when combined or summed, can propel the neuron toward its threshold. Consider, for example, a membrane experiencing a +15 mV shift, causing it to depolarize from -70 mV to -55 mV. In this scenario, graded potentials govern the membrane's ability to...
2.2K
01:19Understanding Memory
646
Memory is the retention of information or experiences over time, facilitated through three main processes: encoding, storage, and retrieval. Encoding is the process of inputting information into the memory system. For instance, when listening to a lecture, watching a play, reading a book, or having a conversation, the brain is actively encoding information. This initial stage involves transforming sensory input into a form that can be processed and stored by the brain. Various factors, such as...
646