Dishmansbio208.wordpress.com Website Review

find an interesting article (news or primary literature) about the nervous system and tie it into material from chapter 45 or 46. this article explores spd, or sensory processing disorder. spd is a condition where the person affected is either oversensitive or undersensitive to one or more environmental stimuli. as stated in chapter 46, the process of perception starts with sensory receptors where a stimulus creates an action potential. the signal is then amplified and transmitted to the central nervous system where the information is processed. for someone to be oversensitive or undersensitive, there must be a functional problem in this system. the. describe two ways that the nervous system filters information that is being transmitted to the brain. information from sensory receptors is coded in two ways. firstly, each receptor is highly specific and will only fire in response to certain values of stimuli. for example, a receptor dealing with sound may respond to a small range of frequencies and may only be sensitive to low-pitched sounds. when this receptor fires, then, the signal indicates only a low-pitched sound. sensory receptors can also change the number and frequency of action potentials performed. a low number of action potentials could indicate a lower volume whereas a higher number of action potentials indicate a higher volume.. what are sensory receptors and how do they limit or affect the kinds of things that an an*mal (or you) perceives in the world? provide. sensory receptors are cells that are specialized to sense environmental energies and convert them into action potentials. there are seven types of sensory receptors. mechanoreceptors sense sound. chemoreceptors detect specific molecules. photoreceptors respond to light. thermoreceptors perceive heat. electroreceptors respond to electricity. magnetoreceptors detect magnetic fields. nociceptors not all an*mals are equipped with each of these types of receptors. humans cannot sense magnetic or electrical fields because we do not