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MPG-official form - Max Planck Institute for Chemical Ecology
MPG-official form - Max Planck Institute for Chemical Ecology

... evaluate the information that is sent via these senses to their brains. They must be able to tell good from bad odors. Good odors are important signals when animals search for food or a mating partner. Female insects also use olfactory signals to select a good oviposition place. Bad smells, on the ...
I Can Quit Anytime I Want by William D. Rogers Ball State University
I Can Quit Anytime I Want by William D. Rogers Ball State University

... Pleasurable stimuli such as eating a favorite food or sexual activity increase the release of dopamine. Dopamine is then removed from a synapse by a different mechanism. It attaches to receptors on the presynaptic neuron and is taken back in. ...
9e_CH_02 - Biloxi Public Schools
9e_CH_02 - Biloxi Public Schools

... Figure 2.2 The Double Helix of DNA. Segments of DNA are made up of genes that determine physical traits such as height, eye color, and whether pigs have wings (no, because of their genetic makeup, they don’t.) The overlap of DNA from person to person is 99.9%! Yet the difference in .1% accounts for ...
Information processes in neurons
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File - LC Biology 2012-2013

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Ch 13: Central Nervous System Part 1: The Brain p 378
Ch 13: Central Nervous System Part 1: The Brain p 378

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thalamus
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315midterm - Rocky Mountain College

...
  • combining reflexes and motor plans, practice ‘til perfect.
  • In a motor plan, there are parameters which allow for adjustment of the movement, rather than having to have a new plan for each movement such as dart throwing and football throwing. True or False
  • If someone has a problem i ...
  • here
    here

    ... Sensory
 neurons
 run
 from
 the
 stimulus
 receptors
 (e.g.
 for
 touch,
vision,
sound,
odour
and
taste)
to
the
CNS.
 Interneurons,
 found
 only
 in
 the
 CNS,
 and
 are
 stimulated
 by
 sensory
 neurons,
 other
 interneurons,
 or
 both.
 
 The
 brain
 is
 estimated
 to
 contain
 100
 billion
 inte ...
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    Association Cortex, Consciousness, and other topics that Embarrass

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    < 1 ... 313 314 315 316 317 318 319 320 321 ... 491 >

    Synaptic gating



    Synaptic gating is the ability of neural circuits to gate inputs by either suppressing or facilitating specific synaptic activity. Selective inhibition of certain synapses has been studied thoroughly (see Gate theory of pain), and recent studies have supported the existence of permissively gated synaptic transmission. In general, synaptic gating involves a mechanism of central control over neuronal output. It includes a sort of gatekeeper neuron, which has the ability to influence transmission of information to selected targets independently of the parts of the synapse upon which it exerts its action (see also neuromodulation).Bistable neurons have the ability to oscillate between a hyperpolarized (down state) and a depolarized (up state) resting membrane potential without firing an action potential. These neurons can thus be referred to as up/down neurons. According to one model, this ability is linked to the presence of NMDA and AMPA glutamate receptors. External stimulation of the NMDA receptors is responsible for moving the neuron from the down state to the up state, while the stimulation of AMPA receptors allows the neuron to reach and surpass the threshold potential. Neurons that have this bistable ability have the potential to be gated because outside gatekeeper neurons can modulate the membrane potential of the gated neuron by selectively shifting them from the up state to the down state. Such mechanisms have been observed in the nucleus accumbens, with gatekeepers originating in the cortex, thalamus and basal ganglia.
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