• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Reflexes. Reaction time.
Reflexes. Reaction time.

... one motor neuron; monosynaptic refers to the presence of a single chemical synapse) – peripheral muscle reflexes (patellar reflex, achilles reflex): brief stimulation to the muscle spindle results in contraction of the muscle – high conduction velocity, short latency, without extension (i.e. no irra ...
File
File

... Review of Key Terms Axon: The long, cylindrical structure of a neuron that conveys information from the soma to the terminal buttons. ...


... responses, and 2) it decreased the number of brain-invading, injury-producing, polymorphonuclear (PMN) leukocytes. PMNs gather around oxygen-deprived brain tissue following stroke and increase the amount of the damaged tissue. When a neuron is damaged, a chain of events is set in motion that drives ...
Responses to Odors Mapped in Snail Tentacle and Brain by [14C]
Responses to Odors Mapped in Snail Tentacle and Brain by [14C]

... method or complicate the interpretation of its results. Insects, for example, make use of trehalose and fatty acids, in addition to glucose and glycogen, as intermediate sources for high energy phosphates (Buchner and Buchner, 1983). An additional limitation has been the requirement for autoradiogra ...
Dorsal Horn Plasticity
Dorsal Horn Plasticity

... 1) The spinal cord is immune privileged and therefore has it cells that deal with damage. 2) Nerve injury is associate with loss of synaptic contacts and remodeling of the dorsal horn. This means that bits of tissue will be getting chewed up and recycled. 3) There are two main cells types resident i ...
The adult human testis produces millions of sperm
The adult human testis produces millions of sperm

... have been extensively studied in the brain, where they are found expressed at low levels under physiological conditions and up-regulated in various pathological conditions. MMPs and TIMPs are expressed in NPs and other brain cell types, including microglia. Noteworthy, MMPs and TIMPs regulate cytoki ...
The role of early visual cortex in visual integration: a neural model of
The role of early visual cortex in visual integration: a neural model of

... mechanism that can be implemented by the early retinotopic visual areas. On the other hand, when both target and distractors are composed of similar elementary features, the amount of time required to distinguish between them increases linearly with the number of distractors. This is said to suggest ...
FIGURE LEGENDS FIGURE 32.1 Eye movements that stabilize
FIGURE LEGENDS FIGURE 32.1 Eye movements that stabilize

... cerebellum, and thalamus of a rhesus monkey, showing the location of the major brainstem nuclei involved in the control of eye movements. Motor neurons for the eye muscles are located in the oculomotor nucleus (III), trochlear nucleus (IV), and abducens nucleus (VI), and reach the extraocular muscle ...
Peroxisome proliferator-activated receptor-γ (PPAR
Peroxisome proliferator-activated receptor-γ (PPAR

... mechanisms underlying the ischemic stroke. Since joining IBMS, his research group has unraveled the role of COX-PGJ2-PPAR-γ axis in cerebral ischemic stroke and identified the anti-neuronal apoptosis mechanism of PPAR-γ. ...
Integration of Visual and Auditory Information by Superior Temporal
Integration of Visual and Auditory Information by Superior Temporal

... Journal of Cognitive Neuroscience 17:3, pp. 377–391 ...
A Test to Assess the Auditory Brainstem Response to Speech
A Test to Assess the Auditory Brainstem Response to Speech

... Studies at Northwestern University showed that 70% of children with diagnosed learning problems had normal BioMAP responses. No single test, including BioMARK, assesses all of a child’s abilities. Because BioMARK is only one test, other types of evaluations, such as a psychoeducational assessment, ...
Chapter 12: The Central Nervous System
Chapter 12: The Central Nervous System

... paralyzes the body muscles controlled by those areas • Voluntary control lost, muscles can still contract reflexively • Premotor cortex - damage results in a loss in motor skills programmed in that region, but muscle strength and ability to perform movements are not ...
Special Senses Lab
Special Senses Lab

... types of cones (receptors for red, green, and blue) in the retina. • Color blindness is more common in men than in women because the genes for the red and green color receptors are located on the X chromosome, of which males have only one and females have two. • The most common type of color blindne ...
Isolation of zebrafish neurons using the
Isolation of zebrafish neurons using the

... embryonic zebrafish neurons for in vitro studies is often a difficult and tedious process due to the inconsistencies associated with manual dissociation methods. With the incorporation of the gentleMACS™ Dissociator system, we are able to easily generate reproducible single-cell suspensions of zebra ...
word - marric.us
word - marric.us

... remembers having seen the antigens in the vaccine dose and can respond quickly. You have been exposed to the practical aspects of immunization through your knowledge of the vaccinations you must receive before you can enter school. You have all experienced getting shots and may have seen your person ...
Neuron communication
Neuron communication

... • A brief electrical charge that travels down the axon of the neuron. ...
Stable propagation of synchronous spiking in cortical neural networks
Stable propagation of synchronous spiking in cortical neural networks

... The classical view of neural coding has emphasized the importance of information carried by the rate at which neurons discharge action potentials. More recent proposals that information may be carried by precise spike timing1±5 have been challenged by the assumption that these neurons operate in a n ...
The Optic Tectum of Birds - Department of Psychology
The Optic Tectum of Birds - Department of Psychology

... Psychology, and Cristian Gutierrez-Ibanez and Janelle M. P. Pakan, Centre for Neuroscience, University of Alberta, Edmonton, AB; and Andrew N. Iwaniuk, Department of Neuroscience, Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, AB. Acknowledgements: This study was ...
The occipitoparietal pathway of the macaque monkey: comparison
The occipitoparietal pathway of the macaque monkey: comparison

... V1 to the parietal and temporal lobes. Indeed, in a recent study of marmoset monkey visual cortex (Elston et al., 1996), we found a progressive increase in the dendritic field area of layer III pyramidal cells between V1, V2, the dorsolateral area (DL) and the fundus of the superior temporal area (F ...
The Nervous System
The Nervous System

... neighbouring neuron through thousands of synapse. Some of the messages are excitatory (i.e. they tell the neuron to “fire”) while others may be inhibitory (i.e. they tell the neuron not to fire).  Whether or not a neuron “fires” off an action potential at any particular instant depends on its abili ...
9.14 Questions on chapter 1 of Brain Structure and Its
9.14 Questions on chapter 1 of Brain Structure and Its

... 9.14 Questions on chapter 5 of Brain Structure and Its Origins 1) Does ontogeny really recapitulate phylogeny? What is a “phylotypic stage”? Explain the terms and discuss the concepts in terms of reliable data. 2) What is a Cynodont? Why are cynodonts important in the story of brain evolution? 3) F ...
The Retrotrapezoid Nucleus and Central Chemoreception
The Retrotrapezoid Nucleus and Central Chemoreception

... are critical to CRC nor that these neurons are the only central respiratory chemoreceptors. Such proof would require demonstrating that their selective destruction eliminates or, at least, attenuates the response of the respiratory network to hypercapnia. This goal has not been achieved yet but lesi ...
Neural Coding and Auditory Perception
Neural Coding and Auditory Perception

... primarily focused in three areas: (1) Effect of reverberation on the directional sensitivity and coding of amplitude envelope in inferior colliculus (IC) neurons; (2) Neural coding of the pitch of harmonic complex tones in the auditory nerve (AN) and cochlear nucleus (CN); (3) Adaptive mechanisms fo ...
Mirror Neurons in a New World Monkey, Common Marmoset
Mirror Neurons in a New World Monkey, Common Marmoset

... the hand-food contact and Epoch 2 corresponds to a 1-s period starting 5 s before the hand-food contact (baseline response). The significance of the response when the animal was observing grasping action executed by the experimenter and when the animal itself was grasping was examined by comparing t ...
serotonergic modulation of swimming speed in the pteropod mollusc
serotonergic modulation of swimming speed in the pteropod mollusc

... swim motor neurons, pedal 5-HT cells, type 12 interneurons and heart excitor neurons. In all preparations, the cells were chemically isolated through the use of high-Mg2+ solutions. In all cases, the cells were depolarized following the addition of serotonin (Fig. 2) and returned to the normal resti ...
< 1 ... 252 253 254 255 256 257 258 259 260 ... 554 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report