SomaticSenses - Somatic senses Somatic Senses: Tactile...

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1 Somatic senses Somatic Senses: Tactile (touch) and other cataneous senses Proprioception (the sense of the relative positions of the body parts) and Kinesthesia (the sensation that a body part has moved) Pain Cataneous 1.Tactile (mechanic) 2. Thermo (Temperature) Pain Kinesthetic Proprioptive Physical stimuli for tactile senses (touch): Displacement of the skin over time
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2 Cutaneous receptors: Mechanoreceptors Thermoreceptors Pain receptors (nociceptors) Various Tactile Receptors Measuring tactile acuity: Two-point threshold Two-point threshold: the smallest separation between two points on the skin that is perceived as two points. A lower two-point threshold suggests higher receptor density and smaller receptive field size. High receptor density Small receptive field Low receptor density Large receptive field
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3 The Neuronal Pathway for Cataneous Senses Ventrolateral nucleus (VLN) Somatosensory cortex (S1) Skin receptors Spinal cord Medial Lemniscus
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SomaticSenses - Somatic senses Somatic Senses: Tactile...

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