Concept explainers
To review:
Perception of physical world through the brain.
Introduction:
Physical world has the light and sound of different wavelengths and frequencies. The sounds, textures and colors are perceived with the help of sensory receptors in the eyes and ears, which convey the information to the brain. These receptors act as energy filters which change the various forms of energy in the real world into the nerve impulses energy. This in turn, gives rise to different forms of sensations that help us relate to the physical reality, even if it is indirect or incomplete.
Explanation of Solution
Human perception of the reality is limited by the ability of sensory receptors for example, the same impulse received by the auditory and optic nerve will be perceived as the sound and sight respectively. In case of vision, the environment has X–rays,
Another example is human perception of cold, which happens with the help of sensory receptors in the brain that sense different levels of heat. In the real world, there are only degrees of heat. These two functions are evolutionary adaptations that help us cope with changes in the environment for example, dressing appropriately, if it gets colder and protecting ourselves with the help of sense of sight.
Want to see more full solutions like this?
Chapter 10 Solutions
HUMAN PHYSIOLOGY
- What is meant by the statement Vision happens mainly in the brain?arrow_forwardWhich of the special senses is based on the following events? Membrane vibrations cause fluid movements, which lead to bending of mechanoreceptors and firing of action potentials. a. taste b. smell c. hearing d. visionarrow_forward___ is defined as a decrease in the response to an ongoing stimulus. a. Perception b. Visual accommodation c. Sensory adaptiltion d. Somatic sensationarrow_forward
- Larry goes to the doctor complaining that he cant see the right side of the visual field with either eye. Where in the visual signal-processing pathway is Larrys problem occurring?arrow_forwardMatch each of the following terms with the appropriate description. _____ somatic senses (general senses)a.produced by strong stimulation _____ special sensesb.endings of sensory neurons or specialized cells next to them _____ variations in stimulus intensity _____ action potentialc.taste, smell, hearing, balance, and vision _____ sensory receptord.frequency and number of action potentials e.touch, pressure, temperature, pain, and muscle sensearrow_forwardHow does the eye focus the light rays of an image? What do nearsighted and farsighted mean?arrow_forward
- Awareness of a stimulus is called a ________.arrow_forwardWatch this video (http://openstaxcollege.org/l/DanielleReed) to learn about Dr. Danielle Reed of the Monell Chemical Senses Center in Philadelphia, PA, who became interested in science at an early age because of her sensory experiences. She recognized that her sense of taste was unique compared with other people she knew. Now, she studies the genetic differences between people and their sensitivities to taste stimuli. In the video, there is a brief image of a person sticking out their tongue, which has been covered with a colored dye. This is how Dr. Reed is able to visualize and count papillae on the surface of the tongue. People fall into two large groups known as tasters and non-tasters on the basis of the density of papillae on their tongue, which also indicates the number of taste buds. Non-tasters can taste food, but they are not as sensitive to certain tastes, such as bitterness. Dr. Reed discovered that she is a non-taster, which explains why she perceived bitterness differently than other people she knew. Are you very sensitive to tastes? Can you see any similarities among the members of your family?arrow_forwardHow do somatic sensations differ from special senses?arrow_forward
- Despite the presence of the blind spot, you do not consciously experience a “hole” in your vision. Why not?arrow_forwardRecognizing an object based on its visual features would rely on processing in the ________ Select one: a. dorsal stream b. primary visual cortex c. lateral geniculate nucleus d. inferotemporal cortex e. posterior parietal cortexarrow_forwardWhich of the following is correct about the lateral occipital complex (LOC) in object perception? a. It is more closely related to the semantic encoding during object perception b. It is more medial in anatomical location in comparison to the FFA and PPA c. It responds more to real than made-up objects d. It shows greater response when viewing objects (from various categories) in comparison to viewing textures e. Its response reduces when the same object is repeated in a different view (i.e., it is viewpoint insensitive)arrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningBiology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning