Share Shares 81 During its short known existence, lysergic acid diethylamide LSD has created quite a name for itself—profound for some and obscene for others. The popularity and infamy of LSD is a rather mixed bag. LSD has also been tested on subjects in a wide range of applications—from a medication to aid in the quest for mental health to a powerful weapon of war.
The central nervous system CNS is made of the brain and the spinal cord and the peripheral nervous system PNS is made of nerves. Together they control every part of your daily life, from breathing and blinking to helping you memorize facts for a test.
Nerves reach from your brain to your face, ears, eyes, nose, and spinal cord Sensory nerves gather information from the environment, send that info to the spinal cord, which then speed the message to the brain. The brain then makes sense of that message and fires off a response.
Motor neurons deliver the instructions from the brain to the rest of your body. The spinal cord, made of a bundle of nerves running up and down the spine, is similar to a superhighway, speeding messages to and from the brain at every second.
The brain is made of three main parts: The forebrain consists of the cerebrum, thalamus, and hypothalamus part of the limbic system. The midbrain consists of the tectum and tegmentum.
The hindbrain is made of the cerebellum, pons and medulla. Often the midbrain, pons, and medulla are referred to together as the brainstem. The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action.
The cerebral cortex is divided into four sections, called "lobes": Here is a visual representation of the cortex: What do each of these lobes do? Frontal Lobe- associated with reasoning, planning, parts of speech, movement, emotions, and problem solving Parietal Lobe- associated with movement, orientation, recognition, perception of stimuli Occipital Lobe- associated with visual processing Temporal Lobe- associated with perception and recognition of auditory stimuli, memory, and speech Note that the cerebral cortex is highly wrinkled.
Phantoms in the Brain: Probing the Mysteries of the Human Mind [V. S. Ramachandran, Sandra Blakeslee, Oliver Sacks] on skybox2008.com *FREE* shipping on qualifying offers. Neuroscientist V.S. Ramachandran is internationally renowned for uncovering answers to the deep and quirky questions of human nature that few scientists have dared to address. The brain constitutes only about 2 percent of the human body, yet it is responsible for all of the body's functions. Learn about the parts of the human brain, as well as its unique defenses, like. Jan 22, · It's a great party trick and useful for circus performers but scientists said this week that learning to juggle can cause changes in areas of the adult brain.
Essentially this makes the brain more efficient, because it can increase the surface area of the brain and the amount of neurons within it. We will discuss the relevance of the degree of cortical folding or gyrencephalization later.
Go here for more information about cortical folding A deep furrow divides the cerebrum into two halves, known as the left and right hemispheres.
The two hemispheres look mostly symmetrical yet it has been shown that each side functions slightly different than the other.
Sometimes the right hemisphere is associated with creativity and the left hemispheres is associated with logic abilities.
The corpus callosum is a bundle of axons which connects these two hemispheres. Nerve cells make up the gray surface of the cerebrum which is a little thicker than your thumb.
White nerve fibers underneath carry signals between the nerve cells and other parts of the brain and body. The neocortex occupies the bulk of the cerebrum.The core component of the nervous system in general, and the brain in particular, is the neuron or nerve cell, the “brain cells” of popular language.A neuron is an electrically excitable cell that processes and transmits information by electro-chemical skybox2008.com other cells, neurons never divide, and neither do they die off to be replaced by new ones.
The brain constitutes only about 2 percent of the human body, yet it is responsible for all of the body's functions. Learn about the parts of the human brain, as well as its unique defenses, like.
Jan 22, · It's a great party trick and useful for circus performers but scientists said this week that learning to juggle can cause changes in areas of the adult brain.
The human brain is the command center for the human nervous system. It receives signals from the body's sensory organs and outputs information to the muscles. Introducing the Human Brain The human brain is the most complex organ in the body.
This three-pound mass of gray and white matter sits at the center of all human activity—you need it to drive a car, to enjoy a meal, to breathe, to create an artistic masterpiece, and to enjoy everyday activities. Since time immemorial, humans have tried to understand what memory is, how it works and why it goes wrong.
It is an important part of what makes us truly human, and yet it is one of the most elusive and misunderstood of human attributes.