聊天BCI,一个P300拼写BCI,具有基于上下文的词预测,利用大型语言模型,从概念到评估
Jiazhen Hong1, Weinan Wang1, Laleh Najafizadeh2
1Integrated Systems and NeuroImaging Laboratory, Department of Electrical and Computer Engineering, Rutgers University, Piscataway, NJ, 08854, USA.
Scientific reports
|February 16, 2026
概括
通过使用大型语言模型 (LLM) 来预测单词,ChatBCI 增强了脑-计算机接口 (BCI),显著减少了按键和句子组合的时间. 这种新的方法提高了沟通和运动障碍的用户的效率.
科学领域:
- 神经科学和人工智能 人工智能
- 人与计算机的交互
背景情况:
- P300拼写器脑电脑接口 (BCI) 通过检测P300脑电波来实现通信,以便选择键.
- 目前的P300拼写器通常需要大量的按键,增加用户时间和认知负载.
- 需要更高效,更易于使用的BCI通信方法.
研究的目的:
- 为了介绍ChatBCI,一个新的P300拼写BCI系统.
- 利用大型语言模型 (LLM) 进行预测性的词汇建议,加快句子构成.
- 为了减少BCI用户的按键和认知负载.
主要方法:
- 聊天BCI使用LLM (GPT-3.5 API) 的零射击学习来进行词汇建议.
- 修改后的图形用户界面 (GUI) 将LLM生成的单词建议显示为可选择的键.
- P300分类是使用逐步线性差异分析 (SWLDA) 进行的.
主要成果:
- 在拼写任务中,ChatBCI分别减少了22%和33%的时间和按键.
- 在拼写任务中,信息传输率增加了15%.
- 在即兴的句子组合任务中,ChatBCI实现了45%的按键节省.
结论:
- 在效率方面,ChatBCI显著优于传统的字母对字母的BCI拼写器.
- 该系统利用远程的LLM查询,消除了对本地模型培训或存储的需求.
- 聊天BCI为开发下一代高效拼写BCI提供了一个有前途的途径,用于实时通信,特别是对于残疾人.
相关概念视频
Language and Cognition
833
Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
833
Components of Language
837
Language, whether spoken, signed, or written, consists of specific components: lexicon and grammar. The lexicon is the vocabulary of a language, comprising its words. Grammar is the set of rules used to convey meaning through the lexicon. For example, English grammar adds “-ed” to most verbs to indicate past tense. Words are formed by combining phonemes, which are the basic sound units of a language. Different languages have different sets of phonemes (e.g., “ah” vs.
837
Higher Mental Functions of the Brain: Language
3.9K
Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
3.9K
Language Development
966
Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
966
Cognitive Learning
1.4K
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...
1.4K


