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ch. 48 Nervous System notes
ch. 48 Nervous System notes

... Nerve impulses pass down the dendrite, through the cell body, and down the axon.  At the end of the axon, the signal reaches a fluid-filled space (synapse) separating the end of the axon from the dendrite of the ...
Nervous System
Nervous System

... animal to quickly detect, communicate and coordinate information about its external and internal environment.  The two major parts of our nervous system are the central nervous system (CNS) and peripheral nervous system (PNS).  The CNS is made of the brain and spinal cord.  The cranial nerves, sp ...
28.1_Responses
28.1_Responses

... Review List three body systems that work together to create a response to a stimulus Sequence What is the correct sequence of the following in response to a stimuli: interneuron, motor neuron, sensory neuron, muscle Review What are two general ways in which nervous systems differ among animal groups ...
Biology Option Review Section E
Biology Option Review Section E

... birth and successful survival until reproduction can occur, able to instinctively remember the beach they were born on, known as natal beaches, and travel immense distances when the time comes to lay their eggs, back to the beaches where they were born as they were able to survive themselves, thus t ...
Researchers find that neurons in the primary visual cortex listen to
Researchers find that neurons in the primary visual cortex listen to

... Researchers find that neurons in the primary visual cortex listen to just a small subset of synaptic inputs 5 February 2015, by Bob Yirka has not been clear is the relative importance each neuron places on the information received from each of the inputs. The difficulty in solving this mystery has b ...
2016-2017_1stSemester_Exam1_050117_final_solution
2016-2017_1stSemester_Exam1_050117_final_solution

... and smooth muscle receive this regulatory tone directly from …postganglionic fibers…… that are linked to the central units. The efferent segment of the pupillary reflex belongs to this system. Activation of the center called …Edinger-Westphal……... nucleus and its downstream ganglion called …… ………… r ...
Sensory Physiology
Sensory Physiology

... – Did you activate neurons with low as well as high threshold for activation? ...
3-2_UniqueFt_of_Neurons
3-2_UniqueFt_of_Neurons

... connect them to other neurons’ axons, the collections of them make the dendritic trees, most of the incoming information from other neurons go through the dendritic spines (small membranous protrusions from the dendrites) axon: one long (depends on the specie and the service site) cable-like project ...
chapter 4
chapter 4

... neurons that carry information up the spinal cord to the medulla. From there, nerve tracts cross over, and the information is conveyed through the thalamus to the somatosensory cortex, which contains a map of the body. “Phantom limb” appears to originate in stimulation of adjacent somatorysensory ar ...
MAPPINGS BETWEEN BRAINS - Wichita State University
MAPPINGS BETWEEN BRAINS - Wichita State University

... process? Do the neurons fire just once or do they continue to take in input and evaluate it and fire another decision until the decisions are irrelevant? Why are the brains neurons able to receive many inputs at the same time, but only give one output at a time? ...
Effect of Outer Hair Cells on Tuning Curves
Effect of Outer Hair Cells on Tuning Curves

... waves elicit maximal responses at the basal end of the membrane, near the stapes, whereas lowfrequency sounds induce maxima at the other end, near the apex of the cochlea. The membrane has been "uncoiled" in this illustration to show the sensory hair cells, each studded with stiff rods called stereo ...
Nervous System Notes - Mrs. Franco's Biology & Anatomy Page
Nervous System Notes - Mrs. Franco's Biology & Anatomy Page

... TYPES OF NEUROGLIA IN CNS  Astrocytes – star shaped cells ...
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Slide 1 - Elsevier
Slide 1 - Elsevier

... Receptive field 2 is less common and is antagonistic for wavelength (blue vs. yellow) without being antagonistic for the location of the stimuli. Both are generated by neural processing in the retina. (C) In the auditory system, primary neurons are excited by single tones. The outline of this excita ...
Final Exam - UF Psychology
Final Exam - UF Psychology

... b. inputs from the two eyes converge on neurons in the lateral geniculate body. c. form and color of an object are processed in parallel with its movement and location. d. the retinotectal pathway is critical to analysis of the biological relevance of a stimulus. e. primary visual cortex contains ce ...
Central Nervous System (CNS): Basic Facts
Central Nervous System (CNS): Basic Facts

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Psychophysics ppt. - Ms. Engel @ South
Psychophysics ppt. - Ms. Engel @ South

... the sensory receptor which causes a change in the release of NT which modifies the firing rate in neurons with which these cells form synapses and so on until the information reaches the brain • Sensory experience: see color, taste bitter, hear low tone ...
Neuroscience - Instructional Resources
Neuroscience - Instructional Resources

... size of the brain. They are not fully equipped, properly positioned, or completely functioning. 30,000 neurons would fit in the space the size of a pinhead. At birth, the brain’s cerebral cortex has 100 billion neurons; but few neurons are connected. ...
Temporal Cortex
Temporal Cortex

... MT: 1. Direction-selective cells for moving bar or moving dots 2. Columnar organization of direction selectivity 3. RF larger than those of V1 cells 4. Some MT cells (20%) are “pattern direction-selective” 5. Lesion of MT cells impairs motion perception ...
Striate cortex April 2009
Striate cortex April 2009

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The visual system

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What a Frog s Eye tells the Frog s brain

... 1. Local sharp edges and contrast 2. the curvature of edge of a dark contrast 3. the movement of edges 4. the local dimming produced by movement or rapid general darkening  Each group of fibers serving one operation maps the retina continuously in a single sheet of endings in the frog’s brain.  Th ...
Answers to Mastering Concepts Questions
Answers to Mastering Concepts Questions

... Information about these stimuli are transmitted to the central nervous system for processing and may trigger hormonal, chemical, or behavioral adjustments that maintain homeostasis. 2. The major types of sensory receptors are chemo-, photo-, mechano-, thermo-, proprio-, electro- and pain receptors. ...
P312Ch04C_BeyondV1
P312Ch04C_BeyondV1

... 3) May be a separate area in the inferotemporal lobe containing neurons which respond to face-like stimuli. The fusiform face area has been identified in humans. It’s under the temporal lobe. 4) Ramachandran has suggested that there may be as many as 30 different processing modules. Each one contain ...
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Feature detection (nervous system)

Feature detection is a process by which the nervous system sorts or filters complex natural stimuli in order to extract behaviorally relevant cues that have a high probability of being associated with important objects or organisms in their environment, as opposed to irrelevant background or noise. Feature detectors are individual neurons – or groups of neurons – in the brain which code for perceptually significant stimuli. Early in the sensory pathway feature detectors tend to have simple properties; later they become more and more complex as the features to which they respond become more and more specific. For example, simple cells in the visual cortex of the domestic cat (Felis catus), respond to edges – a feature which is more likely to occur in objects and organisms in the environment. By contrast, the background of a natural visual environment tends to be noisy – emphasizing high spatial frequencies but lacking in extended edges. Responding selectively to an extended edge – either a bright line on a dark background, or the reverse – highlights objects that are near or very large. Edge detectors are useful to a cat, because edges do not occur often in the background “noise” of the visual environment, which is of little consequence to the animal.
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