0000000000010020

AUTHOR

El-s. Hassan

showing 4 related works from this author

A theoretical basis for the high-frequency performance of the outer hair cell’s receptor potential

1997

The frequency response of the outer hair cell (OHC) was studied theoretically. An electrical model of the OHC was analyzed mathematically, taking into account the effect of its inherent voltage-dependent capacitance. It was found that the variations of the capacitance dependent on the membrane potential could enhance the high-frequency response of the OHC, so that its cutoff frequency could be extended into the audio range. It was found further that the enhancement of the frequency response of the OHC was strongly dependent on its resting potential and on the ratio of the maximum voltage-dependent capacitance to the membrane linear capacitance.

Models AnatomicMembrane potentialFrequency responseMaterials scienceAcoustics and UltrasonicsAcousticsReceptor potentialResting potentialCapacitanceCutoff frequencymedicine.anatomical_structureMembraneArts and Humanities (miscellaneous)Hair Cells AuditoryBiophysicsmedicineHumanssense organsHair cellThe Journal of the Acoustical Society of America
researchProduct

Mathematical description of the stimuli to the lateral line system of fish derived from a three-dimensional flow field analysis

1992

The spatial distributions of the stimuli to the lateral line system of a fish moving alongside or above a plane surface are derived mathematically. The derivation was done from the analysis of the three-dimensional potential flow field on the surface of fish with bodies of circular cross-section with different shapes.

PhysicsCommunicationGeneral Computer Sciencebusiness.industryLateral lineGeometrySpace perceptionPotential flowThree dimensional flowField analysisbusinessFlow fieldBiotechnologyBiological Cybernetics
researchProduct

A suggested role for secondary flow in the stimulation of the cochlear hair cell

1985

The mammalian Corti organ and the reptilian basilar papilla are structures with a curved surface, which vibrate in a fluid medium. This paper is concerned with the role played by the geometric shape of these organs in cochlear hydrodynamics. In association with vibrating structures such as these organs, it can be expected that a stationary current will be initiated due to a nonlinear phenomenon in the boundary layer known as secondary flow. This phenomenon may explain the source of the mechanical nonlinearity in the cochlea.

Vestibular systemPhysicsCommunicationGeneral Computer ScienceSense organbusiness.industryStimulationGeometric shapeSecondary flowmedicine.anatomical_structureotorhinolaryngologic diseasesmedicineBiophysicsInner earsense organsCurrent (fluid)businessCochleaBiotechnologyBiological Cybernetics
researchProduct

Mathematical analysis of the stimulus for the lateral line organ

1985

Behavioral studies have shown that a blind fish is capable of detecting and recognizing stationary objects in its surroundings. It is proposed that the displacement of water caused by the fish as it moves is the basis for this detection capability. Alterations in the displacement of water around the fish, caused by the obstacle, act as stimuli for the lateral line organ. The question of how these stimuli acting on the skin of the fish, image the environment and what information is thus made available to the fish is the concern of this paper. The stimuli for the lateral line organ are derived mathematically. Two cases are treated: that of a fish gliding past an obstacle and that of one appro…

General Computer ScienceSurface PropertiesComputer sciencebusiness.industryModels NeurologicalElectric ConductivityFishesStimulus (physiology)BlindnessBehavioral studyObstacleAnimalsComputer visionArtificial intelligencebusinessMathematicsSimulationSkinBiotechnologyBiological Cybernetics
researchProduct