Psychology · 心理 / 生活方式 / 大脑老化
让思绪漫游、别退休、停止焦虑：拯救大脑免受"认知悬崖"的意外方法
Let your mind wander, don't retire and stop worrying: surprising ways to help save your brain from the cognitive cliff
一、原文精读
鼠标悬停在带 蓝色虚线下划线 的生词上，即可查看词性和释义。
1There are three things you need to know which are not widely known. Think cognitive change not cognitive decline: one way people think about our cognitive function is by comparing it to what it was like when we were in our 20s and it's not a valid comparison. It leads to an assumption that we've declined into deficit.
2Sure, our fluid intelligence – which is about speed and problem-solving – peaks in our 20s, but unless you're a maths whiz or a gun lab researcher, that is less important than what's called your crystallised intelligence, which can actually improve with age. It's the wisdom of knowledge and experience.
3This is about a phenomenon in the brain called scaffolding. To protect our cognitive abilities and perhaps even enhance them as the years pass, our brains build out networks of nerves which act pretty much like the scaffolding inside a skyscraper.
4For The Brain Cliff I interviewed seven cognitive super-agers, who are as different as you could imagine – from the illiterate 95-year-old shoemaker to the woman who taught Mick Jagger statistics and the 94-year-old woman who still works in McDonald's in Kyushu, Japan.
5One example is how they respond to stress. They get over it. They problem-solve. They don't ruminate. And where do you think we ruminate? Yes, in our prefrontal cortex. So you're occupying valuable brain space for cognitive function with unproductive circular thoughts.
6Exercise enhances our brain plasticity, which in turn encourages brain scaffolding. An anti-inflammatory diet – with low amounts of red meat, high diversity of vegetables including leafy greens, fermented foods such as yoghurt and fruits such as berries – can change the microbiome and aid direct absorption of bioactive compounds, both of which support brain scaffolding.
7When the default mode network fires up, parts of the brain that don't normally talk to each other make connections. How do you know if your default network is at work? Your mind wanders. Mind wandering looks as though it's good for your brain.
8One of the important findings from research has been that genes don't play a large role in whether we're on a journey to the brain cliff or when we might reach it. That means the environment and how we live matter hugely. Work is mostly good for our brains. The evidence is strong that cognitive decline speeds up after retirement.
原文出处：The Guardian（访谈，2026-09-07）。受访者为澳大利亚广播员、作家 Dr Norman Swan，谈其新书《The Brain Cliff》中关于大脑老化与认知衰退的科学研究与应对策略。
二、重点词汇
| 单词 | 音标 | 词性 | 释义 | 词块 / 搭配 |
|---|---|---|---|---|
| cognitive | /ˈkɒɡnətɪv/ | adj. | 认知的 | cognitive decline / function |
| assumption | /əˈsʌmpʃn/ | n. | 假设；臆断 | lead to an assumption that … |
| deficit | /ˈdefɪsɪt/ | n. | 缺陷；不足 | decline into deficit |
| fluid intelligence | /ˈfluːɪd ɪnˈtelɪdʒəns/ | n. | 流体智力 | fluid intelligence peaks in our 20s |
| crystallised intelligence | /ˈkrɪstəlaɪzd/ | n. | 晶体智力 | improve with age |
| phenomenon | /fəˈnɒmɪnən/ | n. | 现象 | a phenomenon called scaffolding |
| scaffolding | /ˈskæfəldɪŋ/ | n. | 脚手架；支架 | encourage brain scaffolding |
| super-ager | /ˈsuːpə ˌeɪdʒə(r)/ | n. | 认知超级老人 | cognitive super-agers |
| ruminate | /ˈruːmɪneɪt/ | v. | 反复思考；反刍 | they don't ruminate |
| prefrontal cortex | /ˌpriːˈfrʌntl ˈkɔːteks/ | n. | 前额叶皮层 | in our prefrontal cortex |
| plasticity | /plæˈstɪsəti/ | n. | 可塑性 | enhance brain plasticity |
| microbiome | /ˌmaɪkrəʊˈbaɪəʊm/ | n. | 微生物组 | change the microbiome |
| default mode network | /dɪˈfɔːlt məʊd ˈnetwɜːk/ | n. | 默认模式网络 | the default mode network fires up |
| speed up | /spiːd ʌp/ | v. | 加速 | cognitive decline speeds up |
| retirement | /rɪˈtaɪəmənt/ | n. | 退休 | bad for your brain |
三、长难句分析（三步拆解法）
Sure, our fluid intelligence – which is about speed and problem-solving – peaks in our 20s, but unless you're a maths whiz or a gun lab researcher, that is less important than what's called your crystallised intelligence, which can actually improve with age.
并列主句：our fluid intelligence peaks in our 20s, but … that is less important than … crystallised intelligence
插入定语从句：which is about speed and problem-solving —— 破折号内，修饰 fluid intelligence
条件状语从句：unless you're a maths whiz or a gun lab researcher —— unless 引导
比较结构：less important than what's called your crystallised intelligence —— what 引导的名词性从句作 than 的宾语
定语从句：which can actually improve with age —— 修饰 crystallised intelligence
译文：诚然，我们的流体智力——关乎速度和解决问题——在 20 多岁时达到顶峰，但除非你是数学奇才或顶尖实验室研究员，否则它还不如所谓的"晶体智力"重要，而后者其实会随年龄增长而提升。
To protect our cognitive abilities and perhaps even enhance them as the years pass, our brains build out networks of nerves which act pretty much like the scaffolding inside a skyscraper.
目的状语：To protect our cognitive abilities and perhaps even enhance them —— 不定式短语
时间状语从句：as the years pass —— 表"随着岁月流逝"
主干：our brains build out networks of nerves
定语从句：which act pretty much like the scaffolding inside a skyscraper —— 修饰 networks，内含 like 介词短语
译文：为了保护、甚至随着岁月流逝而增强认知能力，我们的大脑会搭建起神经网络，其作用很像摩天大楼内部的脚手架。
An anti-inflammatory diet – with low amounts of red meat, high diversity of vegetables including leafy greens, fermented foods such as yoghurt and fruits such as berries – can change the microbiome and aid direct absorption of bioactive compounds, both of which support brain scaffolding.
主干：An anti-inflammatory diet can change the microbiome and aid direct absorption of bioactive compounds（并列谓语 change + aid）
插入成分：with low amounts of red meat, high diversity of vegetables … —— 破折号内，介词短语列举饮食构成
非限定定语从句：both of which support brain scaffolding —— which 指代 microbiome 和 absorption 两者
译文：抗炎饮食——少吃红肉，多吃各类蔬菜（包括绿叶菜）、酸奶等发酵食品以及浆果类水果——能够改变肠道微生物组，并促进生物活性化合物的直接吸收，这两者都有助于大脑搭建脚手架。
One of the important findings from research has been that genes don't play a large role in whether we're on a journey to the brain cliff or when we might reach it.
主干：One of the important findings … has been that …（that 引导表语从句）
表语从句主干：genes don't play a large role（in whether … or when …）
介词宾语从句：in whether we're on a journey to the brain cliff or when we might reach it —— whether 与 when 两个从句并列作 in 的宾语
译文：研究得出的重要发现之一是：基因在我们是否会走向"认知悬崖"、以及何时会到达悬崖这件事上，并不起多大作用。
四、全文大意
澳大利亚广播员兼作家 Norman Swan 博士在新书《The Brain Cliff》中提出，与其恐惧"认知衰退"，不如把它看作"认知改变"：流体智力虽在 20 多岁达峰，但关乎知识与经验的晶体智力可随年龄增长。大脑会像摩天大楼搭脚手架一样构建神经网络来保护认知功能，前额叶皮层在判断、决策与情绪控制中愈发关键。他访谈了七位"认知超级老人"，发现基因影响甚微，关键在生活方式：运动与抗炎饮食促进可塑性、思绪漫游激活默认模式网络、避免反刍焦虑、并且不要退休——因为退休会加速认知衰退。核心策略是"多做鼓励脚手架的事，少做妨碍它的事"。
五、思考与仿写
思考题：Swan 博士说"退休对大脑有害"（Retirement is bad for your brain）。结合第 8 段，谈谈你如何看待"工作有益大脑"这一观点，它对体力劳动者与脑力劳动者是否同样适用？
仿写题：仿照第 7 段的句式 "When the … fires up, parts of … that don't normally … make connections."，围绕「灵感」或「学习」写一个句子。