• There is evidence that the vestibular system of mammals has retained some of its ancestral acoustic sensitivity and that this sensitivity is mediated by the otolithic organs (most likely the sacculus, due to its anatomical location). (wikipedia.org)
  • An otolith (Greek: ὠτο-, ōto- ear + λῐ́θος, líthos, a stone), also called statoconium or otoconium or statolith, is a calcium carbonate structure in the saccule or utricle of the inner ear, specifically in the vestibular system of vertebrates. (wikipedia.org)
  • collective term used to refer to the utricle and the saccule , two components of the vestibular system that are designed to detect gravitational forces and linear acceleration of the head. (neuroscientificallychallenged.com)
  • The superior and inferior vestibular nerves (or upper and lower balance nerves) transmit linear and angular acceleration data to the central nervous system. (earsite.com)
  • It is induced by specific forms of motion, particularly repetitive angular and linear acceleration and deceleration, or as a result of conflicting vestibular, visual, and proprioceptive inputs. (msdmanuals.com)
  • Another possible trigger is a conflict in inputs between angular motion and linear acceleration or gravity, as can occur in a zero-gravity environment when turning (angular acceleration). (msdmanuals.com)
  • All in all, an INS measures six quantities at the same time, namely the acceleration and the angular velocity, in each of the three mutually orthogonal spatial directions. (zxc.wiki)
  • According to the state of the art industrial, for example, in the air or in space , acceleration and angular rate sensors used with lasers large, expensive devices are relatively the high accuracy and low drift are usually also trade restrictions because of their military applicability. (zxc.wiki)
  • Each crista lies perpendicular to the long axis of each duct and responds to angular acceleration. (digitalhistology.org)
  • The vestibule contains two communicating sacs (utricle and saccule) of the balancing apparatus. (lookformedical.com)
  • In mice lacking the otoconia of the utricle and saccule, this retained acoustic sensitivity is lost. (wikipedia.org)
  • Small crystals called otoconia lie on a gelatinous membrane, which shift to cause sensations of linear acceleration, whether vertical or horizontal. (scifidimensions.com)
  • The vestibular division supplies the macula in the utricle and in the saccule, as well as the crista ampullaris in the ampulla of each of the three semicircular ducts. (digitalhistology.org)
  • The receptor called the macula is a thickening in the wall of both the utricle and the saccule that responds to changes in linear acceleration and the force of gravity. (digitalhistology.org)
  • The membranous labyrinth is located within the bony labyrinth, and it includes two sacs (utricle and saccule), three semicircular ducts, and the cochlear duct. (anatomy.app)
  • The cochlea is a snail-shaped chamber that houses the organ of Corti. (medscape.com)
  • The vestibulocochlear apparatus contains two types of receptors located in the inner ear: the organ of Corti for receiving the sound stimulus - located in the cochlear duct, and the receptors of the vestibular apparatus for appreciation of the impact of gravitation (static balance) - located in the utricle and saccule, and acceleration (kinetic balance) - located in the semicircular ducts. (anatomy.app)
  • On the basilar membrane is also the organ of Corti that is responsible for changing the vibrations into electrochemical signals. (anatomy.app)
  • The organ of Corti contains the hair cells that have stereocilia . (anatomy.app)
  • The cochlear division of the nerve supplies the organ of Corti in the cochlear duct. (digitalhistology.org)
  • The organ of Corti, the receptor for sound, is located in the cochlear duct (arrows) of the membranous labyrinth. (digitalhistology.org)
  • The basilar membrane forms the inferior surface of the cochlear canal, and supports the organ of Corti, responsible for the transduction of acoustic stimuli. (cloudaccess.net)
  • All auditory information is transduced by only 15,000 hair cells (organ of Corti), of which the so-called inner hair cells, numbering 3,500, are critically important, since they form synapses with approximately 90% of the 30,000 primary auditory neurons (figure 2). (cloudaccess.net)
  • These organs are what allows an organism, including humans, to perceive linear acceleration, both horizontally and vertically (gravity). (wikipedia.org)
  • They are sensitive to gravity and linear acceleration. (wikipedia.org)
  • The otolith system provides vital information about linear head acceleration in three dimensions (i.e., gravito-inertial forces) and the head's orientation relative to gravity. (elifesciences.org)
  • Thus, to get a better sense of ear diversity in fishes and its potential role in hearing, this study focuses on the saccule and lagena, the primary auditory end organs, in six species of the family Macrouridae (rattails), a large group of fishes that typically inhabit depths from 1000 to 4000 m. (bvsalud.org)
  • Because of their orientation in the head, the utricle is sensitive to a change in horizontal movement, and the saccule gives information about vertical acceleration (such as when in an elevator). (wikipedia.org)
  • In addition, in addition to the actual useful signals when used on earth, the influences of gravitational acceleration and the earth's rotation are also measured and must therefore be considered as interference signals. (zxc.wiki)
  • By implicating E2 in control of retinal sensitivity, our data add to growing evidence that the targets of gonadal steroid feedback loops include sensory receptor organs, where stimulus sensitivity may be modulated, rather than more central brain nuclei, where modulation may affect mechanisms involved in motivation. (nsf.gov)
  • Endolymphatic infillings such as otoliths are structures in the saccule and utricle of the inner ear, specifically in the vestibular labyrinth of all vertebrates (fish, amphibians, reptiles, mammals and birds). (wikipedia.org)
  • In mammals, otoliths are small particles, consisting of a combination of a gelatinous matrix and calcium carbonate in the viscous fluid of the saccule and utricle. (wikipedia.org)
  • In addition to sensing acceleration of the head, the otoliths can help to sense the orientation via gravity's effect on them. (wikipedia.org)
  • The primary organ of equilibrium  2. (slideshare.net)
  • Now, in man, mathematical talent depends preferably on the three canals in the middle ear which have something to do with equilibrium, and there is for man a kind of connection between this organ in the ear and between the whole nervous system constituting the spinal cord. (anthro.wiki)
  • The ear is the sensory organ responsible for hearing and the maintenance of equilibrium, via the detection of body position and of head movement. (cloudaccess.net)
  • auris ) is a paired sensory organ responsible for the sense of hearing and balance. (anatomy.app)
  • For this purpose, acceleration sensors are used for the three translational degrees of freedom and for the three rotary yaw rate sensors, each installed in the INS housing according to their sensitive axis. (zxc.wiki)
  • The acceleration can be measured on the one hand by means of vehicle-mounted acceleration sensors ("strap-down"), on the other hand by fully cardanic gyro-stabilized accelerometers that have a stable plane and direction in space or in relation to the tangential plane. (zxc.wiki)
  • The ear is a multifaceted organ that connects the central nervous system to the external head and neck. (medscape.com)
  • This structure as a whole can be thought of as 3 separate organs that work in a collective to coordinate certain functions, such as hearing and balance. (medscape.com)
  • He says the stress response is complex, in that it involves various organs and chemical mediators that are secreted at various times depending on the body's current state. (scifidimensions.com)
  • Man has turned round, thereby transforming his old sense, the sense of gravitation, and now, on entering the mental, he adds the sense of hearing and develops the corresponding organ through which he becomes a creator. (anthro.wiki)
  • To hearing is added the larynx, a sense organ which becomes the organ of will. (anthro.wiki)
  • If the acceleration of a mass point in space is known in terms of its magnitude and direction, its speed is obtained by integrating it over time, and after further integration, the change in position s (t) caused by the speed. (zxc.wiki)
  • Then it continues down the spiral cochlear organ in the scala tympani . (anatomy.app)
  • Alternatively, moving visual input may conflict with lack of perception of movement, eg, viewing a rapidly moving slide with a microscope or watching a virtual reality game while sitting still (also termed pseudomotion sickness or pseudokinetosis, given the lack of actual acceleration). (msdmanuals.com)
  • The cervical ( c-VEMP) and ocular (o-VEMP) have been used to test the function of the utricle and saccule. (neuroequilibrium.in)