By Aage Moller (Auth.)
Read Online or Download Auditory Physiology PDF
Similar anatomy books
This ebook has been written to assist applicants sitting their specialist exam in anaesthesia so that they could have at their disposal the unique anatomical wisdom invaluable for the everyday perform of anaesthesia. in contrast to a textbook of anatomy, which needs to hide all elements of the physique with both exhaustive thoroughness, this booklet concentrates fairly on components of distinctive relevance to anaesthesia and issues out gains of functional value to anaesthetic method.
This unheard of textual content, offered in a special define layout, is designed to aid scholars specialise in the middle evidence of anatomy and body structure with no getting slowed down via extra info. it could actually function both a fundamental textual content in a direction or as a significant other to a extra exact anatomy and body structure quantity.
- Ergebnisse der Anatomie und Entwicklungsgeschichte / Reviews of Anatomy Embryology and Cell Biology / Revues D’anatomie et de Morphologie Expérimentale
- Guide to Human Genome Computing
- Atlas of Human Anatomy. Splanchnology–Ductless Glands–Heart
- Molecular Parameters Indicating Adaptation to Mechanical Stress in Fibrous Connective Tissue (Advances in Anatomy, Embryology and Cell Biology)
- Chest Atlas: Radiographically Correlated Thin-Section Anatomy in Five Planes
Additional resources for Auditory Physiology
In fact, it is of the same magnitude as that with which the sound pressure level of the stimulus tone can be deter mined. 35 shows results obtained in the same subject at t w o dif ferent times a n d at 2 m o n t h s a p a r t . In this graph, the m e a n value of the t w o determinations of the impedance change is s h o w n for intensities in 2-dB steps. Each curve represents the results of one test. 35. The response of the acoustic middle ear reflex in a subject with normal hear ing measured on two occasions separated by two months.
IMPEDANCE OF THE COCHLEA REFLECTED A T THE TYMPANIC MEMBRANE Studies in the cat and rabbit indicate that the cochlea contributes most of the frictional component of the impedance that can be measured at the tympanic m e m b r a n e , whereas very little of the reactive component of the impedance seems to originate from the cochlea (M0ller, 1965). These results were obtained by measuring the ear's acoustic impedance before and after the incudostapedial joint w a s interrupted, thus disconnecting the cochlea from the middle ear.
The mechanical system of the middle ear is thus much less d a m p e d , since the friction in the system is reduced when the influence of the cochlea is eliminated. 24). O v e r a large range of frequencies, the resistive component falls to nearly zero, whereas the reactive component changes relatively little as a result of disconnecting the cochlea. Results of experimentation thus show that the middle ear has very little friction and that the cochlea "seen" from the oval w i n d o w is almost a pure friction.