BMS 250 Lecture Notes - Lecture 8: White Matter, Reflex Arc, Afferent Nerve Fiber

• School: GVSU
• Department: Biomedical Sciences
• Course: BMS 250
• Professor: Brian Kipp

Document Summary

The brain interprets sensations based on the pathway in which they are conducted. Each type of sensory receptor responds to a specific sensory modality such as vision, hearing, smell and taste, and perception occurs in cerebral cortex. Ability to discriminate perception of different sensations relies on different regions of the cerebral cortex receiving and processing the original signal. Flash of light, press hard enough to open photoreceptors in the eye- action potential goes to primary visual cortex in occipital lobe and send signal to brain. Exercise two- stimulus intensity and perception(work in pairs) sugar water concentrations. All action potentials are the same but the faster the motor frequency- the stronger the sweetness is perceived. The stronger the stimulus- the faster the action potentials and the more chemical channels are opened. More chemicals= more chemical channels open- more frequent of action potential. Exercise three- sensory adaptation and phasic and tonic receptors. Sensory adaptation is a property of sensory receptors.