When your hand is touched the information passed to brain.Describe how goes into brain?
When your hand is touched, the information about the touch is transmitted to your brain through a series of electrical signals. Here's a general overview of how this process occurs:
1. Receptors: Your skin contains specialized sensory receptors called mechanoreceptors, which are responsible for detecting various types of physical stimuli, including touch. When something touches your skin, these mechanoreceptors convert the mechanical energy of the touch into electrical signals.
2. Nerve fibers: The electrical signals generated by the mechanoreceptors are then transmitted to your brain via nerve fibers. These nerve fibers are part of the peripheral nervous system, which connects the sensory receptors in your skin to the central nervous system (brain and spinal cord).
3. Spinal cord: The nerve fibers carrying the touch information first travel to the spinal cord. The spinal cord acts as a relay station, where the signals are processed and then directed to the appropriate areas of the brain.
4. Thalamus: The signals from the spinal cord are sent to the thalamus, which is a small brain region that serves as a sensory processing center. The thalamus sorts and relays the sensory information to different parts of the cerebral cortex, which is the outermost layer of the brain.
5. Somatosensory cortex: The somatosensory cortex is the area of the cerebral cortex responsible for processing somatosensory information, which includes touch, temperature, pain, and proprioception (the sense of body position). The signals from the thalamus are sent to the somatosensory cortex, where they are further processed to create a perception of the touch.
6. Integration and interpretation: In the somatosensory cortex, the touch information is integrated with other sensory information and processed to determine the location, intensity, and nature of the touch. The brain then interprets this information and generates a conscious awareness of the touch sensation.
It's important to note that the brain also processes touch information in conjunction with other senses, such as vision, hearing, and smell, to create a comprehensive perception of the environment.