雅思阅读 044 · How the Bilingual Brain Navigates Languages

改编自 Rice University / Cell（2026）。题型：段落信息匹配 + T/F/NG + 填空。难度：中等偏上（Passage 2，约 800 词）。

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🎧 课文朗读音频（约 1 分钟）

正文 Passage

A. A new discovery

Anyone who speaks more than one language knows the feeling of expressing the same thought through entirely different linguistic lenses. A new study by researchers at Rice University and Baylor College of Medicine reveals that the key to this translation ability is a shared geometric map of neural responses in the hippocampus.

The research, published in the journal Cell, shows that most individual neurons respond differently to different languages, even though there are also a small number of cross-language neurons — cells whose responses to equivalent words like the Spanish "tierra" and the English "Earth" are correlated.

However, for the most part, neurons tune themselves differently for each language, but they preserve a shared overall geometric organisation: the spatial relationship between concepts is relatively stable in neural space across languages.

B. How the study was done

Researchers studied four fully bilingual English-Spanish speakers undergoing neurosurgical procedures for epilepsy treatment.

Using ultra-high-resolution recording technologies, including microelectrodes and Neuropixels probes, the team measured the activity of hundreds of individual neurons in the hippocampus while participants listened to stories, read phrases aloud and engaged in spontaneous conversations in both English and Spanish.

C. Shared meaning, different neurons

"Our findings suggest that the brain may store meaning in a language-independent format," said Dr. Sameer Sheth, professor of neurosurgery at Baylor College of Medicine, and co-senior author of the study. "Different languages appear to access a shared conceptual map rather than creating entirely separate representations of the world."

The researchers describe this phenomenon as a "shared semantic geometry." Instead of using identical neurons for each language, the brain appears to preserve the relationships between concepts across languages while allowing each language to use its own neural "readout axes."

"This helps explain how bilingual people can switch between languages so fluidly," said Benjamin Hayden, adjunct professor at Rice University. "The brain seems to maintain a common internal structure for meaning while simultaneously keeping languages distinct enough to avoid interference."

D. No dictionary neurons

The findings suggest that translation is not driven primarily by specialised "dictionary neurons," but instead emerges from coordinated activity across large neural populations.

"Our results show that bilingual meaning is an emergent property of neural populations," said lead author Xinyuan Yan, postdoctoral scholar. "The brain does not appear to rely on one-to-one translation cells. Instead, it preserves patterns of relationships among concepts across languages."

E. Similarities with AI

To analyse the neural data, the researchers compared human brain activity to multilingual artificial intelligence language models, including multilingual BERT.

They found striking similarities between the geometry of semantic representations in the hippocampus and the internal organisation of modern AI systems trained on multiple languages.

"Large language models and the human brain may be converging on similar computational solutions for representing meaning," Hayden said. "That does not mean AI works exactly like the brain, but it suggests there may be universal principles for organising knowledge."

F. Implications and limitations

In addition to advancing basic neuroscience, the findings eventually could influence the development of brain-computer interfaces, language rehabilitation therapies and future AI systems designed to communicate more naturally with humans.

Interestingly, beyond the scientific arena, the discovery may be of broader interest in the humanities and social sciences: the concept of a stable, shared geometric neural map seems to validate a structuralist view of language.

The researchers caution that the study involved only four participants, all of whom were English-Spanish bilinguals undergoing epilepsy treatment. Future studies will be needed to determine whether the same neural principles apply to other languages and larger populations.

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题目 Questions

Questions 1-5: Which paragraph mentions the following?

1. four bilingual speakers undergoing epilepsy treatment

2. the brain preserving relationships between concepts across languages

3. translation emerging from large neural populations

4. similarities with multilingual AI models

5. the study's limitation of only four participants

Questions 6-9: T/F/NG

6. Most individual neurons respond the same way to different languages.

7. The brain stores meaning in a language-independent format.

8. Translation is driven by specialised dictionary neurons.

9. The study involved participants who spoke English and Spanish.

Questions 10-13: Complete the notes. Choose NO MORE THAN TWO WORDS.

• The study was published in the journal (10) ____________.
• The researchers measured neurons in the (11) ____________.
• The phenomenon is called a shared (12) ____________ geometry.
• The AI model compared with the brain was multilingual (13) ____________.

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答案 Answers

题号	答案
1	B
2	C
3	D
4	E
5	F
6	FALSE (respond differently)
7	TRUE
8	FALSE (not driven by dictionary neurons)
9	TRUE
10	Cell
11	hippocampus
12	semantic
13	BERT

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核心词汇

bilingual / hippocampus / neuron / language / translation / semantic geometry / neural map / bilingualism / cognition / brain-computer interface / structuralism