citalopram hbr External acoustical pass spends sound fluctuations to an eardrum and plays a resonator role, own which frequency of fluctuations makes 3000 Hz. At action by an ear of the sound fluctuations close on the values to 3000 Hz, pressure upon an eardrum increases. The external ear carries out protective function, protecting separate structures of an ear from mechanical and temperature influences, provides constant temperature and the humidity necessary for preservation упругихсвойств of an eardrum. coreg Now it is considered to be that a nervous substratum of emotions is limbiko-gipotalamichesky a complex. Inclusion гипоталамуса in this system is caused by that plural communications гипоталамуса with various structures of a brain create a physiological and anatomic basis for occurrence of emotions. The new bark on the basis of interaction with other structures, especially гипоталамусом, лимбической and ретикулярной systems, plays an important role in value judgment of emotional conditions.