Compare and contrast auditory system and optical system

Two of the most important sensory systems in human body are optical system and auditory system. Optical system or sometime called visual system involved in the process of taken amount of stimuli and transfer it into some figure that we can perceive as images that make senses. Auditory systems involved in sound wave that transduced by drum ear into some kind of vibration that eventually gets converted back into wave what we perceive as noise. There are a lot of similarities in their mechanisms of how they gather, carry and prepare those informations from sensory neurons. However, there are also a lots of differences on how each system operated and where does it takes information into difference area of the brain.

For both systems, optical and auditory, the information comes from our environment in many forms. For example, optical system detected all still images and image in motion as far as human eyes can see. The auditory is ready to absorb any noise or sound for twenty-four hours a day. Their structures and mechanisms are similar in a way they gather information, prepare and perceive those information into something that make sense in our brain. After the sensory neurons carry information into specific system each detect, transduce and coding those information before they being send to central system, the brain. Both systems have similar structure that transmit those information to the final destination, the brain.

Even though, both system basic the same. Each system perceive those information that perceive from sensory neuron in totally different way. For instance, optical system receive visible spectrum of wave of electromagnetic radiation. The frequency of wave created color and distinguish brightness by amplitude. In auditory system, the frequency of wave created tone ( pitch) and loudness by amplitude.

For the optical system, the cornea gather light rays that pass into inferior of the eyes. The information such as light's brightness, hue/color or motion are translate into coded neural impulse. The codes then carried by optic nerves to the brain. However, the information from one side are send to the opposite side of hemisphere but stimuli go to the same side hemisphere. The optical information are stored in occipital lobes where it was process and try to make sense of those information base on experience and individual perception.

For the auditory system, the sound's wave goes through the ear canal and hit the ear drum. They activate the the drum and the information being send through the fluid as a result it bents the hair cell in the cochlea and the information then translate into neural impulse. The intensity of sound waves determine by how many hair cell are fire as well as how frequently they fire. The auditory information then carried by auditory nerve from one side of the ear are sent to the opposite hemisphere. The auditory information are stored in temporal lobes where it was process and try to make sense of those information base on past experience and pattern.

In conclusion, the optical and auditory systems have basically the same structure and mechanism but they both different in how they gathering, preparing, detecting, and translating those information. Each system are unique and unbelievably complex structure that we need to learn more.