Early symptoms of auditory nerve damage may involve hearing or balance problems as the auditory system communicates information concerning sound and body positioning to the brain. Symptoms include tinnitus, sensorineural hearing loss, dizziness, or vertigo with or without vomiting and nausea.owever, this is not usually the case. Most deaf people have conductive hearing loss due to damage in the middle ear structures. Neural hearing loss due to auditory nerve damage is much less common than conductive hearing loss and is usually irreversible.
The permanently frozen ground in the northern latitudes is called permafrost. The layer closest to the surface that thaws during the summer is also part of the permafrost, but is called the active layer.
Pingo soil formations form when the permafrost layer traps a large amount of water in the soil. When the water freezes, it expands and pushes the saturated earth upward into a large mound or pingo. Solifluction is a soil formation process that occurs when thawed soils slide down a slope over the permafrost layer.ome soils in areas that experience warmer temperatures thaw for a short time during warmer months. The thawing is restricted to the top layer of soil and a permafrost layer remains frozen several inches below the surface.