Podcast Beta
Questions and Answers
Meissner's and Merkel's receptors are a type of afferent nerves
False
A beta fibers pathway is associated with fine touch
True
Tactile localization involves identifying touch in different parts of the body
True
The threshold distance for tactile discrimination is related to the point at which the tactile sensation is felt
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There are 4 factors affecting tactile discrimination
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Study Notes
Senses
- There are three types of senses: organic senses, special senses, and somatic senses.
Somatic Senses
- Somatic senses are further divided into four categories: pain, temperature, mechanoreceptive senses, and proprioception.
Mechanoreceptive Senses
- Mechanoreceptive senses are stimulated by mechanical stimuli.
- Examples of mechanoreceptive senses include touch, pressure, and vibration.
- There are two subtypes of touch: crude touch and fine touch.
Crude Touch
- Crude touch is poorly localized and has a low spatial resolution.
- It is mediated by free nerve endings and hair end organs.
- Afferent pathway is through A-delta fibers.
- Pathway is through the anterior (ventral) spinothalamic tract.
- Crude touch is also associated with sensations of tickling and itching.
Fine Touch
- Fine touch is well localized and has a high spatial resolution.
- It is mediated by receptors that are not specified in the text.
- Pathway is through the posterior (dorsal) column.
- Fine touch is not associated with pain or temperature.
Proprioception
- Proprioception is the sense of body position and movement.
- It is mediated by receptors that are not specified in the text.
- It is involved in maintaining posture and balance.
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Description
This quiz covers various types of sensory stimuli including organic senses, special senses, and somatic senses. Test your knowledge on the different sensations and their corresponding stimuli such as touch, pressure, pain, temperature, and mechanoreceptive sensations.
