PSY 101 Lecture Notes - Lecture 4: Spinal Cord, Anosmia, Electromagnetic Radiation

• School: University at Buffalo
• Department: Psychology
• Course: PSY 101
• Professor: Wendy Quinton

Document Summary

Percepion: selecion, organizaion and interpretaion of sensory input. Simulus energy (light, sound, smell)------sensory receptors (eyes, ears, noses)------neural. Absolute threshold: minimum amount of simulaion that an organism can detect. Human eye sensiive to only a narrow band of electromagneic radiaion. 140db no immediate damage danger with prolong exposure (loss ater 8hrs) danger with prolonged exposure (loss ater 2hrs) immediate danger (loss ater 3. 75 min) @ noise induced haring loss can be permanent. Hair cells break of and do not grow back in human. Max volume on ipod/iphone with apple stock earbuds = ~100~115db. 70% volume listening for up 5 hrs probably safe longer=potenial damage. 90% volume listening for up 90 mins probably safe longer=potenial damage. Four primary tastes: sweet, sour, salty, biter---umami? (spicy touch) Spinal cord can block incoming pain signals if overloaded with compeing signals (rub the boo-boo---not creaing signals; eyes on it---compeing signals closing gate) We naturally divide visual displays into igure and ground.