Chapt 4 - sakai

Chapt 4 - sakai - Chapter 4 Sensation and Perception...

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Chapter 4 Sensation and Perception
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Sensation and Perception Sensation is the conversion of _____________ from the environmt into responses by your nervous system. Perception is the interpretation of that information. Sensation - it is the stimulation of sensory ______________ – eyes, ears, skin, and the transmission of sensory info to the brain - it is the registering of info, it is energies that affect us Perception - is the process of _________________, integrating, interpreting of that information, by which we understand sensory info. __________ are examples of how we perceive info incorrectly.
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Sensing the World Around Us Stimuli are energies in the ____________________ that affect what we do. Receptors are the specialized _________ in our bodies that convert environmental energies into signals for the nervous system. The Detection of Light Light is the stimulus that the visual system is designed to detect. _____________ light is just one very small portion of the electromagnetic spectrum, which is the continuum of all the frequencies of radiated energy. The ___________ is an adjustable opening in the eye through which light enters. The ________ is the structure on the surface of the eye, surrounding the pupil, and containing the muscles that make the pupil dilate or constrict. The iris gives your eye its characteristic _____________, too.
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Figure 4.2 The lens gets its name from Latin for lentil, referring to its shape—an appropriate choice, as this cross section of the eye shows. The names of other parts of the eye also refer to their appearance.
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The Structure of the Eye The __________ is a rigid, transparent structure on the very outer surface of the eyeball. It focuses light by directing it through the ______________. When the light goes through the pupil, it is directed to the lens. The _________ is a flexible structure that can vary in thickness, enabling the eye to accommodate, adjusting its focus for ____________ at different distances. The lens directs the light through a clear, jellylike substance called the vitreous humor to the back of the _______________. At the back of the eye is the _____________ (a neural tissue lining back of eye), and the structure containing the visual receptors.
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Presbyopia develops as humans ________ because the lens decreases in flexibility, resulting in a reduced ability to ________ on nearby objects. Elongated eyeballs cause myopia, so that the person can focus well on nearby objects, but not distant ones. This condition is also called ______________________. Flattened eyeballs cause hyperopia, so that the person can focus well on distant objects, but not on nearby ones. This is also called _________________________. Glaucoma is a condition caused by increased pressure
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Chapt 4 - sakai - Chapter 4 Sensation and Perception...

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