Nros 418 - Study guides, Class notes & Summaries

Define adaptation - Answer Reduction of sensory responsiveness when stimulation is unchanging. It prevents us from having to respond continuously to unimportant information Explain the adaptation process for the visual pathway - Answer Low levels of Ca++ activate recoverin which activates rhodopsin kinase, phosphorylates rhodopsin, arrestin binds and shuts off pathway Explain the adaptation process for the auditory pathway - Answer (prolonged stimulus) Stereocilia are bent, tip links...

Why does the organization of the eye guarantee that we have a blind spot? Why can't we normally detect the blind spot? - Answer Lack of photoreceptors in this area because it is where the optic nerve and blood vessels exit the eye. We cannot detect the blind spot because we use our surroundings to fill in the information with the ipsilateral and contralateral visual inputs Ideal Answer: The natural blind spot in the eye is due to the lack of photoreceptors where the optic nerve and blood ...

Why does the organization of the eye guarantee that we have a blind spot? Why can't we normally detect the blind spot? - Answer Lack of photoreceptors in this area because it is where the optic nerve and blood vessels exit the eye. We cannot detect the blind spot because we use our surroundings to fill in the information with the ipsilateral and contralateral visual inputs Ideal Answer: The natural blind spot in the eye is due to the lack of photoreceptors where the optic nerve and blood ...

Define adaptation - Answer Reduction of sensory responsiveness when stimulation is unchanging. It prevents us from having to respond continuously to unimportant information Explain the adaptation process for the visual pathway - Answer Low levels of Ca++ activate recoverin which activates rhodopsin kinase, phosphorylates rhodopsin, arrestin binds and shuts off pathway Explain the adaptation process for the auditory pathway - Answer (prolonged stimulus) Stereocilia are bent, tip links...

Which 2 groups originally classified neurons by morphology? - 1. Golgi 2. Ramon y Cajal What was the first technique used to visualize the neuron? - Golgi staining technique How does golgi staining technique work? - If you put brain tissue into solution with silver nitrate for a few days the solution goes into neuron and makes it visible What debate occurred between Golgi and Ramon/Cajal - - Golgi thought that the nervous system was one connected network, which is wrong - Ramon and Caj...

Which 2 groups originally classified neurons by morphology? - ANSWER 1. Golgi 2. Ramon y Cajal What was the first technique used to visualize the neuron? - ANSWER Golgi staining technique How does golgi staining technique work? - ANSWER If you put brain tissue into solution with silver nitrate for a few days the solution goes into neuron and makes it visible What debate occurred between Golgi and Ramon/Cajal - ANSWER - Golgi thought that the nervous system was one connected network, wh...

Why does the organization of the eye guarantee that we have a blind spot? Why can't we normally detect the blind spot? -ANSWER The blind spot occurs due to the lack of photoreceptors where the optic nerve and blood vessels exit the eye. Our brain fills the blind spot in by using information that surrounds the blind spot area using ipsilateral and contralateral visual input. What is different about the fovea and the rest of the retina? Why is visual acuity best when images fall on the fovea? ...

Define adaptation Reduction of sensory responsiveness when stimulation is unchanging. It prevents us from having to respond continuously to unimportant information Explain the adaptation process for the visual pathway Low levels of Ca++ activate recoverin which activates rhodopsin kinase, phosphorylates rhodopsin, arrestin binds and shuts off pathway Explain the adaptation process for the auditory pathway (prolonged stimulus) Stereocilia are bent, tip links are stretched, channel ...