Question

module 1.6d sensation: skin, chemical, & body senses & sensory interaction

1. what are the four basic touch sensations?
2. how do we sense touch?
3. what influences our perception of pain?

a. biological:
b. social - cultural:
c. psychological:

1. explain gate - control theory.
2. how can we alter pain?

Explanation:

1. The four basic touch sensations are pressure, warmth, cold, and pain. These are detected by different types of receptors in the skin.
2. We sense touch through specialized sensory receptors in the skin. These receptors respond to mechanical, thermal, and chemical stimuli and send signals via sensory neurons to the central - nervous system for processing.
3. Biological factors include the presence of pain - sensing neurons and the release of neurotransmitters. Social - cultural factors involve cultural norms about pain expression and social support. Psychological factors include attention, expectations, and emotions.
4. The gate - control theory proposes that pain signals must pass through a "gate" in the spinal cord. Non - painful stimuli can close this gate, blocking pain signals from reaching the brain.
5. We can alter pain through physical means like medication, which can block pain signals or reduce inflammation. Psychological methods such as distraction, relaxation techniques, and positive thinking can also change our perception of pain.

Answer:

1. The four basic touch sensations are pressure, warmth, cold, and pain.
2. Through specialized sensory receptors in the skin that send signals to the central - nervous system.
3. a. Biological: Presence of pain - sensing neurons and neurotransmitter release. b. Social - Cultural: Cultural norms and social support. c. Psychological: Attention, expectations, emotions.
4. Pain signals pass through a "gate" in the spinal cord, and non - painful stimuli can close the gate to block pain signals.
5. Through physical means like medication and psychological methods like distraction and relaxation.