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Somatic and Tactile Sensations
In this lecture ´´ Somatic Sensations: Tactile and Position Senses ´´ are explained. Section one is about ´´Somatic and Tactile Sensations´´. In the beginning, classification of somatic senses is explained. It is followed by the classification of somatic senses. The educator then elaborates the tactile receptors in detail. After that, the detection and transmission of tactile sensations is discussed. In the end of this session, the detection of vibration and detection of tickle and Itch by free nerve endings is explained.
Section two is about ‘DCML Systems’’. Initially, the educator focuses on the sensory pathways for transmitting somatic signals into CNS. Transmission in dorsal column-medial Lemniscal system is explained after that. This is followed by a brief discussion about the functions of neurons. The section is then concluded by discussing the spatial orientation of the nerve fibers.
Section three is about ‘’ Somatosensory Cortex”. In the beginning of this section, somatosensory cortex is thoroughly explained. The educator then sheds some light on the somatosensory area I and II. Layers of the somatosensory cortex and their functions are then explained. In the end of this section, the educator elaborates the somatosensory association areas and amorphosynthesis.
Signal Transmission and DCML Analysis
Section four is about “Signal Transmission and DCML Analysis’’. The educator starts off this section by explaining the basal neural circuit in the DCML system. Two-point discrimination and effect of lateral inhibition is then brought under discussion. This is followed by a brief explanation about the transmission of rapidly changing and repetitive sensations. In the end, the vibratory sensations are discussed.
Position Senses and AL System
Section five is about “Position Senses and AL Systems’’. This section begins by discussing position senses and processing of position sense information. Later in this section, the transmission of less critical sensory signals is explained. Finally, section concludes on the characteristics of transmission in AL pathway.