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History of the Nervous System Cells of the Nervous System
History of the Nervous System Cells of the Nervous System

... Neuron Histology ...
Cognition and Perception as Interactive Activation
Cognition and Perception as Interactive Activation

... • they attempt to develop a proof for their insight • whereas the insight may have happened quickly, the proof may take years to develop ...
Lectures 2 and 3, Exam II Answers
Lectures 2 and 3, Exam II Answers

... 4. What elements are required for plant organic compounds? ...
ppt
ppt

... • Neurons communicate by receiving signals on their dendrites. Adding these signals and firing off a new signal along the axon if the total input exceeds a threshold. • The axon connects to new dendrites through synapses which can learn how much signal is transmitted. • McCulloch and Pitt (’43) buil ...
Somatic and Special Senses
Somatic and Special Senses

... – In presence of light, these molecules breakdown into a colorless protein called opsin and a yellowish substance called retinal that is synthesized from vitamin A Poor vision in dim light, called night blindness results from ...
Worksheet - Nervous System I Lecture Notes Page
Worksheet - Nervous System I Lecture Notes Page

... membrane, may cause the membrane to depolarize. Neurotransmitters that do this are called _________________________ (excitatory/inhibitory). List the three ways that neurotransmitters are removed from the synapse: 1. __________________________________________ 2. _____________________________________ ...
Seminar Slides
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... Number of connections Time course of neuronal events Silicon at 10-9 vs. neurons at 10-3 ...
Central Nervous System
Central Nervous System

... Nervous System: coordinates and controls body activity. It detects and processes internal and external information and sends out an appropriate response. Major structures of nervous system: brain, spinal cord, peripheral nerves, and sensory organs. Two major parts of the nervous system are:  Centr ...
Systems Neuroscience Auditory system
Systems Neuroscience Auditory system

... • also for near sources (less than 1 m) there is significant IID due to differences in distance to each ear even at lower frequencies (Shinn-Cunningham et al 2000) • Intersection of these ‘near field’ IID curves with cones of confusion constrains them to toroids of confusion ...
chronic morphine exposure affects visual response latency of the
chronic morphine exposure affects visual response latency of the

... In the present study, we systematically examined the effect of chronic morphine exposure on the visual response latency of LGN cells and found that LGN neurons in morphine-treated cats exhibited significantly longer response latency than those in saline-treated cats. This suggests that visual inform ...
Motor Systems II Loops and Tracts
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... the extremities and face. Huntington’s disease results from the selective loss of striatal neurons in the indirect pathway. Thus, the balance between the direct and indirect pathways becomes tipped in favor of the direct pathway. Without their normal inhibitory inputs, thalamic neurons can fire rand ...
Chapter 10: Nervous System I
Chapter 10: Nervous System I

... 1. Neuronal pools are groups of neurons that make synaptic connections with each other and work together to perform a common function. 2. Neuronal pools may have excitatory or inhibitory effects on other pools or on peripheral effectors. 3. Facilitation is a condition created in which a neuron is br ...
corticospinal tract
corticospinal tract

... • The rubrospinal tract – 2ndairy motor system responsible for large muscle movement such as the arms and the legs (flexor and extension, muscle tone). • The spinothalamic tract is a sensory pathway originating in the spinal cord that transmits information about pain, temperature, itch, some measure ...
“visual pathway and its lesions” dr.tasneem
“visual pathway and its lesions” dr.tasneem

... distinguishing fine detail. The outer portion (peripheral retina) is the primary location of rod cells and allows for night vision and seeing movement and objects to the side (i.e., peripheral vision). ...
The Autonomic Nervous System
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... and itscell body is located within the CNS. Preganglionic neurons emerge from the brainstem or spinal cord and make asynaptic connection in ganglia (an aggregation of nerve cell bodies located in theperipheral nervous system).These ganglia function as relay stations between a preganglionic neuron an ...
Rapid Neural Coding in the Retina with Relative Spike Latencies
Rapid Neural Coding in the Retina with Relative Spike Latencies

... latency of a ganglion cell transmitted up to 2 bits of information on a single trial. The spike count provided considerably less information for the majority of all recorded cells (Fig. 1D). Subsequent brain regions may thus learn more about the stimulus from noting the time of the first spike after ...
Comparing neuronal and behavioral thresholds
Comparing neuronal and behavioral thresholds

... linear motion [4]. These neurons may play an important role in optic flow perception [5]. They can encode expanding and contracting spirals with similar accuracy as the animals [6]. It is, however, unclear whether this ability is restricted to coarse differences between these spiral types (Fig. 1), ...
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... influence of NN theory ...
Anatomy and Physiology
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Nervous system Lab - Sonoma Valley High School
Nervous system Lab - Sonoma Valley High School

... Name the system that responds quickly and the system that responds slowly to the body’s needs. Name the three basic functions of the nervous system. Name the two types of cells found in the nervous system. Contrast neurons and neuroglial cells as to size, numbers, and types. Identify and give a func ...
BIOL241TasteTouchNS14AUG2012
BIOL241TasteTouchNS14AUG2012

... • Could leptin, which is secreted by fat cells, be a signal to cut down on sweets? ...
Cultured Olfactory Interneurons From Limax maximus: Optical and
Cultured Olfactory Interneurons From Limax maximus: Optical and

... application of 100 PM dopamine. The digital images analyzed in Fig. 8 B were not obtained with the temporal resolution necessary to study changes in the pattern of spike production evident in the records of Figs. 4 and 5, however, the increase in average rate of spike production caused by dopamine i ...
Neuroeconomics and the Social Brain Henrik Walter (-frankfurt.de) Peter Kenning (-muenster.de)
Neuroeconomics and the Social Brain Henrik Walter (-frankfurt.de) Peter Kenning (-muenster.de)

... (fMRI) research on these topics that shows that decision making in neuroeconomical contexts goes together with activation of brain regions that are involved in processing socio-emotional information like the ventral striatum, the medial prefrontal cortex, the orbitofrontal cortex or the insula. A co ...
AG-VT - 02.424 06.1 Skeleton and Vital Organs
AG-VT - 02.424 06.1 Skeleton and Vital Organs

... Sensory neurons or Bipolar neurons carry messages from the body's sense receptors (eyes, ears, etc.) to the CNS. These neurons have two processes. Sensory neuron account for 0.9% of all neurons. (Examples are retinal cells, olfactory epithelium cells.) Motoneurons or Multipolar neurons carry signals ...
pdf - Llano Lab
pdf - Llano Lab

... receive receptive field information from one cortical area and relay it to another (Guillery, 1995). In contrast to the higher-order nuclei, primary sensory nuclei receive receptive field information from the sensory periphery and relay this information to the cortex, and have been referred to as ‘‘fir ...
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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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