Week 4 - Neural Network 

A neural network is a group of interconnected units called neurons that send signals to one another. Neurons can be either biological cells or mathematical models. While individual neurons are simple, many of them together in a network can perform complex tasks. There are two main types of neural network.

In neuroscience, a biological neural network is a physical structure found in brains and complex nervous systems – a population of nerve cells connected by synapses.

In machine learning, an artificial neural network is a mathematical model used to approximate nonlinear functions. Artificial neural networks are used to solve artificial intelligence problems.

In the context of biology, a neural network is a population of biological neurons chemically connected to each other by synapses. A given neuron can be connected to hundreds of thousands of synapses.[1] Each neuron sends and receives electrochemical signals called action potentials to its connected neighbors. A neuron can serve an excitatory role, amplifying and propagating signals it receives, or an inhibitory role, suppressing signals instead.

Neurons in an artificial neural network are usually arranged into layers, with information passing from the first layer (the input layer) through one or more intermediate layers (hidden layers) to the final layer (the output layer).The "signal" input to each neuron is a number, specifically a linear combination of the outputs of the connected neurons in the previous layer. The signal each neuron outputs is calculated from this number, according to its activation function. The behavior of the network depends on the strengths (or weights) of the connections between neurons. A network is trained by modifying these weights through empirical risk minimization or backpropagation in order to fit some preexisting dataset.

This brings a very interest topic of backpropagation which is being used as fundamental unit of AI

https://en.wikipedia.org/wiki/Neural_network

https://becominghuman.ai/a-high-artificial-neural-network-modelling-the-brains-exposure-to-psychedelics-5fa9fb13fa51

Week 3 - Funny Neuron !!!

 Week 3 - Funny Neuron !!!

Now we know about "neuron" this blog will make more sense ( I meant humors !!.. haha)

Why did the neuron get detention? 

Because it couldn't keep its cell membrane in line!

Did you hear about the neuron who got lost? 

It couldn't find its axon and dendrites—it was all mixed up!

Why was the neuron always so positive? 

Because it had an electrifying personality!

Why did the neuron refuse to share its snacks? 

Because it said, "I'm not axon for trouble!"

How did the neuron fix its broken heart? 

It used a little synaptic glue and patched things up!

Week 3 - All about Neuron !!!

  Week 3 - All about Neuron !!!

Neurons are the basic building blocks of the nervous system and are responsible for transmitting information in the form of electrical signals. They play a crucial role in various physiological functions, including sensory perception, motor control, and cognitive processes such as thinking and memory. Neurons communicate with each other through specialized junctions called synapses, where chemical neurotransmitters are released to transmit signals from one neuron to another.

Gray matter is primarily composed of neuron somas (the round central cell bodies), and white matter is mostly made of axons (the long stems that connects neurons together) wrapped in myelin (a protective coating). The different composition of neuron parts is why the two appear as separate shades on certain scans.

Reference : https://www.hopkinsmedicine.org/health/conditions-and-diseases/anatomy-of-the-brain#:~:text=The%20brain%20is%20a%20complex,process%20that%20regulates%20our%20body

 Week 2 - Gray Matter and White Matter of your Brain !!!

Gray and white matter are two different regions of the central nervous system. In the brain, gray matter refers to the darker, outer portion, while white matter describes the lighter, inner section underneath.

Gray matter is involved in processing information and carrying out cognitive functions, while white matter facilitates communication between different parts of the brain. Both types of tissue are essential for the proper functioning of the nervous system.

That's is very interesting.. 

Reference : https://www.hopkinsmedicine.org/health/conditions-and-diseases/anatomy-of-the-brain#:~:text=The%20brain%20is%20a%20complex,process%20that%20regulates%20our%20body.

Week 2 - Challenge - Brain Facts and Myths !!!

1. About 75% of the brain is made up of water
2. Your brain is a random thought generator
3. Your brain uses 20% of the oxygen and blood in your body
4. Exercise is just as good for your brain as it is for your body
5. Brain activity can power a small light bulb
6. Your brain is mostly fat
7. Reading out loud uses different brain circuits than reading silently
8. Alcohol effects your brain in ways that include blurred vision, slurred speaking, an unsteady walk, and more
9. It is a myth that humans only use 10% of our brain
10. The human brain contains approximately one hundred billion neurons.. OMG...

Reference : https://www.dentinsti tute.com/22-facts-about-the-brain-world-brain-day/

Week 1 - Challenge - No-Brainer jokes !!!

Week 1 - Challenge - No-Brainer jokes !!!

Monday : Apr 01, 2024

Why did the brain refuse to take a bath?

“It didn’t want to be brainwashed”.

Tuesday : Apr 02, 2024

What do you call a human skull without a hundred billion neurons?

“A no-brainer”.

Wednesday : Apr 03, 2024

What did the doctor say to the man who had an elephant sitting on his brain?

“It looks like you have a lot on your mind”.

Thursday : Apr 04, 2024

Why do brain cells grown in a dish attend the ballet and the opera?

“Because they are very cultured”.

Friday : Apr 05, 2024

What kind of brain images do dogs and cats like best?

“PET scans”.

Brain talk !!

 Week 1- Brain Talk !!

Some interesting facts about brain !!!

The Brain's Energy Consumption 

Despite making up only about 2% of the body's weight, the brain consumes around 20% of the body's energy. This high energy demand is necessary to fuel the brain's countless processes, including thinking, memory, and regulating bodily functions.

Neuroplasticity 

The brain's ability to reorganize itself and form new neural connections throughout life is known as neuroplasticity. This remarkable feature allows the brain to adapt to changes in the environment, learn new skills, and recover from injuries. Neuroplasticity is at the core of learning and memory formation, and it plays a crucial role in rehabilitation after brain injuries.

The Brain's Processing Speed

Neurons, the cells that transmit information in the brain, can communicate with each other at incredibly high speeds. Some neurons can transmit signals at speeds of up to 120 meters per second. This rapid communication enables the brain to process vast amounts of information and orchestrate complex behaviors and thoughts in real-time.

content source :wikiedpdia 

image source : https://www.123rf.com/photo_71067870_funny-character-of-the-brain-is-loaded-the-concept-of-the-human-brain-works-in-a-cartoon-style-flat.html