Types of Neuropathy. Peripheral neuropathy is a disorder of the peripheral nervous system, which includes the sensory and autonomic nerves that connect the spinal cord and muscles, skin and internal organs. It usually affects the limbs, causing numbness, prickling and pain.
Gibson and Walk (1960) hypothesized that depth perception is inherent as opposed to a learned process. To test this, they placed 36 infants, 6 to 14 months of age, on the shallow side of the visual cliff apparatus.
In addition, at just six months of age the infant is capable of detecting sounds as quiet as 1 decibel (dB) (for comparison, a whisper is around 10 dB). This suggests that humansâ auditory perception is genetically pre-programmed and indicates an innate preparedness to learn language.