TAILIEUCHUNG - Ebook An introduction to the physiology of hearing (4th edition): Part 2

(BQ) Part 2 book "An introduction to the physiology of hearing" presents the following contents: The auditory cortex, the centrifugal pathways, physiological correlates of auditory psychophysics and performance, sensorineural hearing loss | CHAPTER SEVEN The AUDiTQRy CORTEX The auditory cortex consists of core areas surrounded by belt and parabelt areas. Auditory stimuli are analysed first in the core areas and then in the belt and the parabelt areas. The core areas and some of the surrounding areas are tonotopically organized with further patterns of organization . ear dominance latency and degree of sensitivity to frequency-modulated stimuli superimposed on the tonotopic organization. Cells in the auditory cortex can show a wide variety of tuning curves with either broad or narrow tuning and single or multiple peaks of frequency sensitivity. They can show specific responses to amplitude and frequency-modulated stimuli and to the location of sound sources. Neurones show a general progressive increase in complexity of responses from the core to the belt. Behavioural studies suggest that the core auditory cortex is necessary for the response to relatively basic features of the auditory stimulus such as detecting the direction of frequency change and for sound localization while the belt and parabelt areas detect more complex features. It is suggested that the auditory cortex is necessary for the representation of auditory objects that is the assembly of information about all auditory features of a stimulus including its location. It has been speculated that in primates the information is then divided into two general streams with what information being passed anteriorly in the cerebral cortex and with both what and where information being passed posteriorly and dorsally. ORGANiZATiQN Anatomy and projections The auditory areas of the cerebral cortex are divided into core areas with further surrounding areas. The initial detailed analysis of the auditory cortex was performed in the cat. This was undertaken in accordance with the concepts prevailing at the time which included a single primary receiving area AI plus an adjacent secondary area AII and further surrounding association areas. .

• Y khoa - Dược
• An introduction to the physiology of hearing
• The auditory cortex
• The centrifugal pathways
• Sensorineural hearing loss
• Physiological aspects of the cochlear prosthesis
• Sound localization and spatial hearing
• The physics and analysis of sound
• The outer and middle ears
• The cochlea
• The auditory nerve
• Mechanisms of transduction