PS102 Chapter 4: PS102 - 4
Document Summary
Pressure or damage to the skin (touch, heat, pain) Sensory receptor cells: sensory receptor cells specialized cells, activated by stimuli - convert to neuron impulses. Produce electrical signals, conversations of stimuli to neuro impulses: sensory transduction conversion of sensory signals. Thresholds: testing the limits: absolute threshold the smallest amount of a stimulus that one can detect 50% of the time. Smell a drop of perfume diffused throughout a six-room apartment. Taste 5 millilitres of sugar in 9 litres of water. Touch an insect"s wing falling on your cheek from a height about a centimetre. Hearing the tick of a watch at 6 metres in a quiet room. Sight a candle flame 50 kilometres away on a clear, dark night. 1/17/16: smallest difference in the amount of stimulus that a sense can detect, weber"s law: size of jnd proportional to size of initial stimulus. *note that this is something students often get wrong on tests.
