Sensation is a term used in psychology to describe the process by which our sensory organs respond to external stimuli and send signals to the brain. Perception, on the other hand, is the process by which the brain selects, organizes, and interprets these sensations. Sensation is a physical process, while perception is psychological. Here are some key points about sensation in psychology:

• Sensation is the process that allows our brains to take in information via our five senses.
• Sensory receptors are specialized neurons that respond to specific types of stimuli.
• Sensation occurs when sensory information is detected by a sensory receptor.
• During sensation, our sense organs are engaging in transduction, which is the conversion of one form of energy into another.
• Sensory information is then sent to the central nervous system in the form of action potentials.
• Sensory functions can be ascertained by training organisms to make discriminatory responses to different properties of physical stimuli.
• Sensation is a concept defined in terms of dependent relationships between discriminatory responses of organisms and properties of physical stimuli.

In summary, sensation is the process by which our sensory organs respond to external stimuli and send signals to the brain, while perception is the process by which the brain selects, organizes, and interprets these sensations. Sensation is a physical process that involves the conversion of one form of energy into another, and it can be studied by training organisms to make discriminatory responses to different properties of physical stimuli.