“What if we could reverse-engineer the human brain to build a machine that thinks and feels like us?”
1. The Brain Organizes Memories as Patterns
Our brain organizes and accesses information through sequences and patterns rather than isolated bits. Imagine walking down a busy street: most details, like strangers' faces, fade unless something triggers a memory.
Memory retrieval often depends on sensory triggers. For example, the smell of your grandmother’s cookies might resurface a childhood memory. This sequential mechanism means that when you recall “A,” it can help bring back “B” and “C” from a familiar pattern.
But this sequential organization can create challenges. For instance, we can easily name the alphabet in order but find it difficult to do it backward because our brain is wired to store the sequence from A to Z, not in reverse.
Examples
- Police reconstruct faces using memory-triggering techniques based on sequence patterns.
- Smelling perfume or tasting specific foods can unlock forgotten childhood events.
- Musicians struggle to start playing a piece from the middle instead of the beginning.
2. The Neocortex: The Brain’s Processing Powerhouse
The neocortex, the largest part of the human brain, is the seat of memory, thinking, and problem-solving. This outer layer stores and recognizes information hierarchically, building insights from pieces of smaller patterns.
For instance, when brushing your teeth, the brain breaks down the activity into sub-steps: picking up the toothbrush, applying toothpaste, and so on. Neurons in the neocortex handle these small “chunks” and combine them into a whole.
This organization allows the brain to anticipate and predict outcomes. By comparing sensory input to stored patterns, the neocortex not only understands the world but also makes educated guesses about the unknown.
Examples
- Recognizing a whole word by identifying the individual letters and shapes.
- Predicting an unfinished picture of an object based on familiar patterns.
- Completing routine actions, like making coffee without consciously thinking of every step.
3. Different Brain Parts Collaborate for Memory and Action
The neocortex doesn’t work solo. It communicates with other brain parts, such as the hippocampus and cerebellum, to interpret experiences and control movement.
The hippocampus is essential in distinguishing new information from familiar experiences. It connects memories—like recognizing a friend despite their new haircut. Meanwhile, the cerebellum handles quick, instinctive motions and fine-tuned motor skills, such as catching a ball or writing.
This cooperative approach ensures both learning and survival. A sensory input first passes through the thalamus, where quick reactions occur, before the neocortex evaluates its nuances.
Examples
- The hippocampus helps differentiate friend A’s smile today versus last week.
- The cerebellum enables smooth dance moves or accurate handwriting.
- Damage to the thalamus can result in coma-like states due to disrupted brain communication.
4. Creativity and Emotions Are Brain-Made
Everything from emotions like love to creative expressions like poetry stems from the brain, driven largely by the neocortex. This challenges the belief that such traits are mysteries beyond neurological mechanics.
Spindle cells in the neocortex generate emotional responses, linking to different brain regions and making it hard to regulate feelings in the heat of passion. Similarly, creativity relies on recognizing metaphors and symbols—abilities rooted in the brain’s pattern-focused design.
The size and activity level of the neocortex play a large role in individual creativity. A strengthened or expanded neocortex (whether biologically or through collaboration) directly enhances creative output.
Examples
- Metaphor recognition in poetry is an example of creative pattern recognition.
- Spindle cells trigger overwhelming emotions such as anger or intense love.
- Group projects often result in greater innovation because “two heads are better than one.”
5. Mimicking the Brain in Machines
To create artificial intelligence (AI), scientists are modeling machines on how the human brain processes and learns. By understanding the brain’s pattern mechanism, researchers are building systems that learn independently.
Mathematical models like the hierarchical hidden Markov model (HHMM) allow computers to recognize and predict patterns. Once trained, the software makes intelligent decisions, much like how a child learns by trial and error.
This approach has enabled advancements such as voice recognition and personal assistants like Siri, which can understand and respond appropriately to human language based on patterned learning.
Examples
- Pattern recognition in the brain inspires AI programs like Siri.
- Apple’s AI predicts the next word a user might type in its predictive text function.
- HHMM allows autonomous learning as seen in machine language translation tools.
6. AI and the Potential for Consciousness
Could machines ever think or act with free will, like humans? Some argue that advanced AI already blurs the line by processing vast amounts of information to make independent decisions.
IBM’s Watson is an example. It defeated champions in Jeopardy by processing millions of documents and making precise predictions. Philosophically, this kind of processing touches on the question of whether consciousness and free will are truly unique to humans.
If decisions are mere interpretations of stored data, machines could theoretically develop “free will” by analyzing and choosing from patterns without human intervention.
Examples
- Watson won Jeopardy through self-attained knowledge and statistical analysis.
- Free will might be an illusion, as even humans act on subconscious processes.
- Computers analyzing ambiguous data mimic thinking in real-time situations.
7. AI Will Soon Be Part of Everyday Life
AI’s presence in society is growing exponentially. Technological improvements, such as 3D computer chips, are enabling faster processors and holding more memory, bringing us closer to building machines with human-like cognitive abilities.
By 2029, experts predict we’ll see machines as smart as humans in reasoning and creativity. By the 2030s, everyday life may include robots as commonplace team players.
Advances in processor speed and memory storage are already setting the stage, ensuring machines can carry out the calculations and retain the massive amounts of data needed to simulate a digital brain.
Examples
- Intel’s development of 3D chips increases processing power.
- Japan’s supercomputer can perform calculations as fast as needed for AI.
- Predictions suggest robots may soon become as accepted as washing machines.
8. Machines May Integrate Non-Biological Intelligence
One of the exciting possibilities for AI is merging non-biological intelligence with human cognition. This could result in expanded human capabilities, such as working alongside a digital counterpart.
Collaboration is already a form of enhanced intelligence, as seen when multiple individuals come together to solve problems. In the future, enhancements to the human brain may come from external technologies rather than social teamwork.
The implications are vast, from solving global problems in science to expressing art at an unprecedented level of creativity.
Examples
- Combining digital and biological intelligence could enhance decision-making.
- Teams today solve puzzles more effectively than individuals.
- External neural tools might expand human performance beyond biology.
9. Preparing Humanity for an AI Future
The societal introduction of artificial minds raises important questions about ethics and human identity. Media portrayals of sentient robots have already conditioned us to imagine asking machines for companionship or advice.
Advancements like Siri or self-driving cars may seem novel today but are paving the way for deeper integrations. Ethical frameworks will be needed to decide what the role of AI should be in human lives.
From simple assistants to nearly human companions, the trajectory of AI development challenges us to consider how to adapt while preserving what makes us distinctly human.
Examples
- The movie Her inspires discussions on emotional relationships with AI.
- Self-driving cars already navigate traffic without human intervention.
- Personal assistants provide daily support, preparing people for deeper reliance.
Takeaways
- Improve your memory recall by associating information with sensory patterns, like smells, sounds, or visuals.
- Embrace collaboration as a way to mimic the brain's own ability to combine diverse inputs for better creative solutions.
- Stay informed about AI advancements and their societal implications to prepare for an increasingly digital future.