The Science of Reading and the Brain’s Letterbox

What is the Brain’s Letterbox?

"The Brain's Letterbox" describes the BRAIN LOCATION where reading happens, when a student is taught to read using phonics. The French neuroscientist, Stanislas Dehaene (2009), discovered, observed and named this region. His findings have sparked a rebirth of literacy in our nation. Students in states, which have adopted this Science of Reading into their curriculum, are now ranking top in the nation. Samuel L. Blumenfeld’s Alpha-Phonics: A Primer for Beginning Readers (1983) uses this very science through what Blumenfeld called “SYSTEMATIC, INTENSIVE PHONICS”.

Why Does BRAIN LOCATION Matter?

Visual information begins at the eyes, where light is converted into electrical signals by the retina. When eyes look at print, the brain must “choose” where to send the information for processing.

  • If a student learns words as single-unit whole images, the information is sent to the brain location where memories of whole images (pictures) are stored.

  • If a student learns that letters are “SOUND SYMBOLS” that must be blended from left-to-right, the information is sent to a specialized location where the brain creates reading networks designed specifically for this purpose (the Letterbox).

Where does the Brain Send the Information?

WHOLE-WORD LEARNERS: If a student has only been taught to memorize words as single units, the brain identifies them as pictures. Instead of sending these images to the specialized reading centers, it routes them to areas on both sides of the brain used for general visual recognition—the same areas we use to identify a photograph of a tree or a house. These general visual systems are in no way connected to the Brain’s Letterbox.

PHONICS LEARNERS: When looking at a word, the brains of Phonics learners will identify the letters as sound symbols to be blended from left to right. Once the sounds have been blended, the resulting word is stored. The blending process takes place in the Letterbox — also known as the Visual Word Form Area — It is perfectly positioned in the left hemisphere to act as a bridge between the visual system and the language system.

Is One “Storage Unit” Better than Another?

WHOLE-WORD STORAGE: Word-pictures are stored as separate bits of information that were learned as whole units. As more words are stored, they can’t be broken down into smaller units because they were not learned that way. The learner who starts storing words easily at the beginning, but as more and more word-pictures are stored the process of learning new words slows down.

PHONICS WORD STORAGE: Once the sounds of the letters have been blended and stored, if a learner has difficulty remembering a whole word, the letter symbols can be blended again. When the same word is blended a second or third time, the reading networks formed by the blending process become stronger, and they have been coated with myelin which protects the networks and makes them slippery. Slippery networks speed the process of re-blending letters which have been previously blended.

How does Reading Method Affect Vocabulary Development?

WHOLE-WORD VOCABULARIES: Every word has been memorized as a distinct, single unit. As more words are learned this way, the learning slows down. A whole-word learners’ reading vocabularies are limited to the number of words they have been able to memorize and remember.

PHONICS VOCABULARIES: Once phonics learners have learned a fairly small, finite number of letter sounds and letter sound combinations, they have the tools necessary to read any new word they come across. Their vocabularies are endless.

What are the Outcomes of These Two Ways of Learning?

WHOLE-WORD LEARNERS: Since these learners haven’t developed blending skills, they are at the mercy of others when they come across new words and will need assistance.

PHONICS LEARNERS: Once phonics learners have a complete knowledge of the letter sounds and letter sound combinations, and their brains have learned to blend the sounds from left to right, they can read independently as they blend sounds new letter combinations and discover new words.

SAMUEL BLUMENFELD and Conflicting READING REFLEXES (July, 1998)

THE “COLLISION” OF BRAIN HABITS: Samuel Blumenfeld, author of Alpha-Phonics: A Primer for Beginning Readers, described reading as a series of learned reflexes. When we teach children to read, we are actually training their brains to react automatically to print.

THE HOLISTIC REFLEX: According to Blumenfeld, the modern "Whole-Word" or "Look-Say" method builds a Holistic Reflex. This trains the brain to treat an alphabetic word as a single "picture" or pictogram.

THE PHONETIC REFLEX: This is the correct reflex. It is acquired by learning letter sounds and drilling consonant-vowel combinations until the child automatically associates letters with sounds. As Blumenfeld stated: “When that phonetic reflex is developed, reading becomes easy, fluent, and enjoyable.”

The Collision: When a child is taught to "guess" words from pictures or context while also trying to learn phonics, a "collision of reflexes" occurs. The brain becomes disorganized, struggling to decide whether to treat the word as a picture or a group of sound symbols to be blended,

Why Alpha-Phonics Works

Alpha-Phonics is designed to build the Phonetic Reflex exclusively. By focusing on systematic, simple drills, we ensure that the brain sends information directly to the "Letterbox" every single time, avoiding the collision that causes reading failure.

SCIENCE VERIFIED THE INSTINCTS OF A READING TUTOR!

Blumenfeld understood the need for phonics instruction instinctively. Dehaene proved it scientifically. Samuel Blumenfeld’s theories on the Phonetic Reflex were developed over 30 years of research and tutoring. His work, originally published in The Blumenfeld Education Letter, accurately predicted the neurological findings of modern scientists like Stanislas Dehaene.

Primary Sources & Research

  • Biology Insights. (2025, August 25).What Brain Regions Are Active When Looking at a Photo? Retrieved online on March 2, 2026 at https://biologyinsights.com/what-brain-regions-are-active-when-looking-at-a-photo/Biology Insights.

    Blumenfeld, S. L. (1998, July). Why our children can't read and what we can do about it. The Blumenfeld Education Letter, 13(7).

    Dehaene, S. (2009). Reading in the Brain: The New Science of How We Read. Penguin Viking.

    WISE Channel. (2019, October 23). How the Brain Learns to Read - Prof. Stanislas Dehaene [Video]. YouTube. Retrieved online March 2, 2026 at https://www.youtube.com/watch?v=25GI3-kiLdo‍ ‍