The Midbrain (Gray Matter) by Michael Morgan PDF

By Michael Morgan

Observe how the forebrain connects to the hindbrain and what a few of the midbrain's duties contain.

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Extra resources for The Midbrain (Gray Matter)

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50 Seeing Without Believing TWO VISUAL SYSTEMS A discussion of the visual system typically focuses on how the brain processes images. Images are identified by their shape, size, and color. The human visual system is so sensitive it can distinguish thousands of colors and an infinite number of shapes. The pathway that codes colors and shapes runs from the retina of the eye to the lateral geniculate nucleus in the thalamus to the occipital lobe of the cerebral cortex. This is the system that allows for conscious awareness of the face of a loved one or the beauty of a sunset.

Eventually these vibrations of the air enter your ear, The Impressive Inferior Colliculus causing your eardrum to vibrate. In contrast, light travels much faster so seeing the ball hit the bat is almost instantaneous. Vibrations of the eardrum are transmitted to the inner ear where specialized neurons convert vibrations into neural activity. Mechanical vibrations are converted to neural activity inside a spiral-shaped structure called the cochlea. The cochlea is a fluid-filled chamber with a flexible basilar membrane running through the middle.

The pink color is the result of a thick network of blood vessels in this region. 1). The function of the red nucleus matches that of the primary motor cortex in many ways. Both receive input from the sensorimotor cortex (this part of the cerebral cortex organizes movements based on sensory system input) and contribute to voluntary movements. The primary motor cortex dominates movement in humans. In contrast, the red nucleus makes a greater contribution to voluntary movement in most other animals.

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