TLDR;
This video explores the fascinating relationship between reading and the human brain, explaining why we aren't born with the ability to read, the origins of reading, and how it impacts our brains and bodies. It also discusses the effects of reading on screens and offers advice for parents navigating new technologies.
- Reading isn't innate but a skill developed by co-opting brain areas for vision, auditory processing, language, and attention.
- Different writing systems, like logographic (Chinese) and alphabet-based (English), activate different brain areas.
- Reading impacts us physically, with the brain's empathy-related areas reacting to characters' emotions.
- Screen reading encourages skimming, increasing susceptibility to misinformation, while deep reading is fundamental to our humanity and societal progress.
- Parents are advised to immerse children in reading and model reading behaviour to counter the negative impacts of excessive digital exposure.
Why aren't we born able to read? [0:00]
Reading isn't a natural, innate ability. While humans are born with the neural circuits for sight and sound, the brain doesn't automatically possess the capacity to read. From an evolutionary perspective, the brain hasn't had sufficient time to develop a dedicated reading centre. Instead, the reading brain network is constructed by repurposing areas involved in vision, auditory processing, language, attention, and emotions.
What is the origin of reading? [0:48]
The earliest writing systems include Sumerian cuneiform symbols, dating back to around 3300 BC, and Egyptian hieroglyphics developed around the same time. Over time, these symbols evolved and became more sophisticated as reading and writing became more widespread, eventually transforming into the letters and characters recognised today.
What impact does reading have on the brain? [1:12]
Reading is a comprehensive brain process that activates all four lobes of the cortex. Through reading, letters and words become associated with sounds and meanings. Developing the ability to read fundamentally alters brain activity, structure, and connectivity.
How does reading different languages impact the brain? [1:39]
The language one reads influences brain structure. For example, Chinese characters, which use a logographic system where symbols represent objects or ideas, activate different brain areas compared to alphabet-based languages like English. Learning logographic systems relies more on visual memory and association. This was confirmed by studying a bilingual patient who, after a stroke, lost the ability to read Chinese but retained his English reading skills, demonstrating how the brain adapts to the specific demands of different languages.
How does reading impact the body? [2:43]
Reading affects us physically as well as mentally. People can experience the emotions of characters on a visceral level. The anterior insula, responsible for feelings of nausea, pain, and discomfort, is also associated with empathic processes, indicating a literal connection between reading and physical sensations.
How does reading on a screen affect us? [3:18]
New technologies are changing the brain. Reading on screens often involves passive scrolling, frequently interrupted by notifications. This encourages skimming, which makes individuals more vulnerable to misinformation. It's crucial to foster critical thinking skills to analyse information deeply, which is essential for a functioning democracy. Research suggests that early cell phone use can negatively impact academic performance and attention spans in children, as constant distractions can lead to a desire for quicker intervals between stimuli, causing boredom when offline. However, some studies indicate that monitored, education-focused screen time can be beneficial.
How can parents navigate new technologies? [5:07]
The solution to the challenges posed by digital technology is to immerse children in reading and cultivate a reading life. Parents and teachers should model reading behaviour and read to children. Deep reading is fundamental to our humanity, changing our brains and shaping who we are, which in turn transforms society and enables a better future.
