How you sense. Sensory Receptors – nerve endings that gather sensory information Sensation – when neural impulses arrive at cerebral cortex Perception – how cerebral cortex interprets the sensory information.
Sensory Adaptation • Large amounts of sensory information is being sent to the brain • The brain filters out insignificant information this is called SENSORY ADAPATION. • Example: – You brain telling you that there is pressure on your feet from the ground. – Your brain telling you that the room temperature is cool or warm.
Receptors ● Four types − Photoreceptors – react to light − Chemoreceptors – chemical reactions − Mechanoreceptors – physical contact − Thermoreceptors temperature
Chemoreception Chemo reception Taste (tongue) – Smell (olfactory cells in nose) Taste buds contain many taste receptors that sense dissolved chemicals.
Smell Olfactory cells sense airborne chemicals. Located in the nasal passages. Work with taste buds. Sends input to olfactory bulb in brain and then to the emotional centres of the brain and the frontal lobe
Sensory Receptors in the Skin Sensory receptors are modified ends of sensory neurons. Skin has several types of receptors to help you feel: light touch, pressure, pain, change in temperature.