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9 Μαΐ 2023 · Brain waves are electrical impulses that flow through the brain, creating patterns of activity. They are measured in cycles per second, or hertz (Hz). There are four main types of brain waves: alpha, beta, delta, and theta.
- Theta
Theta - Understanding Brain Waves: A Comprehensive Guide
- Delta
Delta - Understanding Brain Waves: A Comprehensive Guide
- Alpha
Alpha - Understanding Brain Waves: A Comprehensive Guide
- Activity
Activity - Understanding Brain Waves: A Comprehensive Guide
- Beta
Beta - Understanding Brain Waves: A Comprehensive Guide
- Calmness
Calmness - Understanding Brain Waves: A Comprehensive Guide
- Frequencies
Normal EEG Waves: Understanding Brain Waves and Their...
- Deep Sleep
Deep Sleep - Understanding Brain Waves: A Comprehensive...
- Theta
12 Μαρ 2014 · Opsins are proteins that change their shape in response to light of certain wavelengths. Rhodopsin, found in rod cells, responds most strongly to light in the blue-green spectrum. Three different...
Neural oscillation, synchronized rhythmic patterns of electrical activity produced by neurons in the brain, spinal cord, and autonomic nervous system. Oscillations in the brain typically reflect competition between excitation and inhibition. Learn more about the types, hierarchy, and mechanisms of neural oscillations.
4 Οκτ 2023 · The stars of our brains. Astrocytes (or astroglia) got their name from the Greek word astron meaning star, due to their star-shaped appearance (2). This star-like structure is formed by...
The retina is covered with millions of light sensitive cells called rods and cones. When these cells detect light, they send signals to the brain. Cone cells help detect colors.
Visible light travels in waves and is a very small slice of the electromagnetic radiation spectrum. Light waves differ based on their frequency (wavelength = hue) and amplitude (intensity = brightness). In the retina there are two types of light receptors (photoreceptors): cones and rods.
1 Απρ 2012 · The central part of the human retina, where light is focused, is called the fovea, which contains only red and green cones. The area around the fovea, called the macula, is critical for reading and driving.
