- SENSATION REFERS TO THE PROCESS OF SENSING OUR ENVIRONMENT THROUGH TOUCH, TASTE, SIGHT, SOUND, AND SMELL. THIS INFORMATION IS SENT TO OUR BRAINS IN RAW FORM WHERE PERCEPTION COMES INTO PLAY. - PERCEPTION IS THE WAY WE INTERPRET THESE SENSATIONS AND THEREFORE MAKE SENSE OF EVERYTHING AROUND US. Sensation and Perception

Absolute Threshold- weakest amount of stimulus that can be sensed Signal Detection Theory- What is important to sense and what is not, blocking out background noise Sensory Adaption-process of becoming less sensitive to unchanging stimulus

Vision Light is Electromagnetic energy  Not all wave lengths are visable  Roy G. Biv (colors of the Spectrum) The Eye  Light enters the Pupil to the lens. Reflected onto the retina, Optic nerve sends info to the brain  Blind Spot- optic nerve leaves the eye, no photoreceptors ( Rods – Black/white, Cones –Color)  Complementary Colors- After Images

Hearing Sound travels in waves through the air causing vibrations. Every sound has its own pitch and loudness. Sound enters and causes eardrum( Hammer, Anvil,Stirrup) to vibrate sounds to the inner ear (Cochlea) Cochlea- neurons that are transmitted to Auditory nerve Pitch- speed of sound waves Loudness- height of sound waves

Perception Making sense of sensory information Closure- filling in the blanks Figure Ground Perception- perception of figures against a background Proximity Similarity Continuity