As sound waves enter the ear, they travel through the outer ear, the external auditory canal, and strike the eardrum (tympanic membrane) causing it to vibrate. The central part of the eardrum is connected to a small bone of the middle ear called the malleus (hammer). As the malleus vibrates, it transmits the sound vibrations to the other two small bones (incus, stapes) or ossicles of the middle ear, the incus and stapes. As the stapes moves, it pushes a structure called the oval window in and out. This is passed onto the cochlea, which is a fluid-filled snail-like structure that contains the receptor organ for hearing. The cochlea contains the spiral organ of Corti, which is the receptor organ for hearing. It consists of tiny hair cells that translate the fluid vibration of sounds from its surrounding ducts into electrical impulses that are carried to the brain by sensory nerves. As the stapes rocks, back and forth against the oval window, it transmits pressure waves of sound through the fluid of the cochlea, sending the organ of Corti in the cochlear duct into motion. The fibers near the cochlear apex resonate to lower frequency sound while fibers near the oval window respond to higher frequency …show more content…
While 5-HTP is not directly responsible for feeling of increased mood, euphoria, or relief of depression it is a main factor in the synthesis and metabolism with serotonin, melatonin and tryptophan. 5HTP has been used over the counter for relief of minor and major depression since the late 1970 's especially in Europe. 5-HTP is the main precursor in the brain for the portion of Serotonin. The main studies that have shown the importance of this nuero transmitter have been related to treating dysphoria after use of the street drug extract or MDMA. Significant studies in rats showed that increasing dietary 5-HTP helped increase serotonin production. While there haven’t any real studies on the increase of 5-HTP with music therapy is a reasonable guess that if if serotonin levels increase with music therapy that levels of 5-HTP its most import precursor in production of serotonin would also