Unlocking the Brain’s Mysteries: How Information Theory Deciphers Our Behavior

Renda Zhang
7 min readDec 29, 2023

--

Hello, everyone! Today, let’s delve into a topic that might sound a bit complex but is actually closely related to each of our lives — Information Theory. You might think of it as a concept commonly mentioned in communications and computer science, but its charm goes far beyond that. Information Theory is also a key to unlocking the secrets of our brain.

First, let’s picture our brain as a super-complex information processing center. Every moment, a myriad of information flows into our brain through our senses and is then processed and manifested as actions, thoughts, or memories. Doesn’t this process sound both mysterious and fascinating? Information Theory is the science that studies this flow and processing of information.

So, how does Information Theory help us understand the workings of the brain and even decode our behaviors and decision-making processes? How does our brain select the necessary needle of information from the haystack of sensory inputs? These questions might sound complex and challenging, right?

Don’t worry, we will explore these questions by looking at some of the latest scientific research. For instance, how researchers from Northwestern University and other institutions have developed brain-like computing devices, and the role of the thalamus in our brain. These intriguing scientific discoveries not only deepen our understanding of Information Theory but also reveal how it helps us decode the cognitive mechanisms behind human behavior.

Are you ready? Let’s embark on this journey to explore the mysteries of the brain together!

The Brain, A Mysterious Information Processing Center

Sometimes, our brain is like an island full of mysterious treasures. Think about it — every moment, intense “information transactions” of sensations, memories, thoughts, and decisions are taking place here. What role does information theory play in this? Let’s dive in.

First, imagine walking down a busy street, surrounded by various sounds and colors. This sensory information is like a relentless stream of data pouring into your brain. Your brain needs to quickly find the important parts from these inputs, like the sound of a car suddenly darting out, while ignoring the less important ones, like billboards on the roadside. This is where the concept of “information filtering” from information theory comes into play, helping our brain navigate through the sea of information to find life’s “lifebuoys.”

Next, let’s consider our memory. It’s not just a storage of information but also a process of “encoding” and “decoding” information. Every time we recall an event, our brain is essentially decoding the information stored in our memory. Information theory helps us understand that the process of memory is a highly efficient way of handling information, akin to data compression and decompression in computers.

Lastly, our decision-making process is also a complex information processing activity. When faced with choices, the brain needs to weigh various pieces of information and then make the best decision. This involves evaluating the value of information and how to make the optimal choice with limited resources and time. Information theory acts like a wise advisor here, guiding us on how to process and utilize information more efficiently.

New Insights from Latest Research

When exploring the complex information processing system of the brain, the latest scientific research always brings new insights and surprises. For instance, researchers from Northwestern University, Boston College, and MIT have developed a new type of synaptic transistor that mimics human intelligence. This device can process and store information simultaneously, just like our brain (Morris, 2023). Imagine, a device capable of not only performing simple machine learning tasks but also associative learning, operating swiftly and efficiently at room temperature. This advancement is more than a technological breakthrough; it provides us with a deeper understanding of how the brain processes information.

Additionally, new findings on the role of the thalamus in the brain offer fascinating insights. The thalamus is more than just a crucial relay station in brain information processing; it plays a key role in integrating cognitive functions like perception, memory, and decision-making (Nature Reviews Neuroscience, 2023). By studying the function of the thalamus, we gain a better understanding of how the brain coordinates the processing of vast sensory inputs and complex information streams.

These latest scientific studies not only demonstrate the efficiency and complexity of brain information processing but also offer new perspectives on understanding individual behavior. After all, every decision and action is the result of a complex information processing process in our brain.

How Information Theory Helps Us Understand Individual Behavior

Having seen the role of information theory in understanding how the brain processes information, how does it help us comprehend individual behavior? Let’s explore this further.

First, picture yourself making a decision, perhaps choosing what to have for lunch or deciding which smartphone to buy. In these instances, your brain processes and evaluates a multitude of information. The role of information theory here is to help us understand how this decision-making process is influenced by various types of information. Each decision involves weighing and choosing among different pieces of information, which is at the heart of information theory.

Consider our daily social interactions. When we communicate with others, we exchange not just verbal information but also non-verbal cues, such as body language, facial expressions, and tone of voice. Information theory helps us understand how these pieces of information are encoded and decoded, and how they influence our understanding of and responses to social interactions.

Lastly, our patterns of behavior, such as how we respond to our environment, are also outcomes of information processing. For example, in a noisy environment, our brain automatically filters out some background noise, allowing us to focus on important conversations or tasks. This automatic information filtering mechanism is an evolutionary adaptation of our brain to process information more efficiently.

Real-Life Examples and Analysis

In our daily lives, there are many seemingly simple instances that hide complex information processing. Let’s examine some specific scenarios to see how principles of information theory apply in real life.

Example 1: Supermarket Shopping Choices

Scenario: Imagine you are in a supermarket, facing a variety of milk options. Some emphasize low fat, others high calcium, and they vary in price.

Information Theory Concepts: This scenario involves information theory concepts of information filtering and channel capacity. Your brain must select the most relevant information from a multitude of options in a limited time. This process is akin to the concept of channel capacity in information theory, which is about transmitting information effectively within the limits of processing capacity. Your brain filters out less relevant information (like marketing slogans not important to you) and focuses on key factors (like price and nutritional content) to make a choice.

Example 2: Quick Decision-Making at Work

Scenario: You are a project manager and suddenly need to make a quick decision due to a technical glitch in a crucial project.

Information Theory Concepts: This example applies information theory principles of entropy and decision trees. Entropy here refers to the uncertainty in decision-making. Your brain needs to quickly assess different action plans and predict potential outcomes of each choice. This process is similar to creating a decision tree, where each branch represents a potential decision and its possible consequences. Information theory helps your brain reduce uncertainty and make the best information-based decision quickly.

Example 3: Misunderstandings and Resolution in Social Interaction

Scenario: During a conversation with friends, you misinterpret a friend’s joking remark and feel slightly offended.

Information Theory Concepts: This situation involves the information theory principles of encoding and decoding. When your friend makes a joke, there’s a discrepancy between his intended message (encoded information) and what you receive (decoded result). This could be due to misunderstandings of non-verbal cues (like tone or facial expressions) or differences in cultural background and personal experiences. Information theory helps us understand these communication errors and guides us in seeking additional information (like clarifying the friend’s intent) or clearer communication to resolve misunderstandings.

The Insights From Information Theory

After analyzing real-life examples, it’s clear that Information Theory is not just a theoretical framework but also a practical tool that helps us understand and predict human behavior.

  1. Information Processing in Decision Making: Every decision we make, from simple daily choices to complex professional decisions, involves the encoding, processing, and decoding of information. Information Theory principles provide a framework for understanding these processes, allowing us to gain better insight into our own and others’ decision-making.
  2. Optimizing Communication: In interpersonal interactions, Information Theory principles help us understand the efficacy and efficiency of communication. By comprehending how information is transmitted, we can communicate more effectively, reducing misunderstandings and conflicts.
  3. Self-Understanding and Growth: Understanding Information Theory principles not only helps us better comprehend others but also fosters deeper self-awareness. This understanding is crucial for personal growth and mental health.

In conclusion, Information Theory offers more than a scientific framework for understanding human cognition and behavior; it also has profound implications for fields like artificial intelligence and machine learning. By mimicking the way the human brain processes information, we can develop more efficient and intelligent technologies.

References

  • Morris, A. (2023). New brain-like transistor mimics human intelligence. Northwestern Now. Retrieved from Northwestern Now website
  • Nature Reviews Neuroscience. (2023). The impact of the human thalamus on brain-wide information processing. Nature Reviews Neuroscience. Retrieved from Nature website

--

--

Renda Zhang
Renda Zhang

Written by Renda Zhang

A Software Developer with a passion for Mathematics and Artificial Intelligence.

No responses yet