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Odor and nutrition - ernährungs umschau
Odor and nutrition - ernährungs umschau

... perception (lat. olfactere = to smell) plays a predominant role. To meet with this special function, the nose is anatomically located right above the mouth and thus inspects any incoming good. Hence, the sense of smell also controls the individual food preferences. With more than 400 olfactory recep ...
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... biological system developed by Rui de Figueiredo. • An extrinsic stochastic model for the development, as a functions of age, of the average neuron/synapse population densities in cortical regions of the human brain. • The model describes the behavior of neurons and synapses during neuron-genesis ba ...
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... 3. Describe the parts of a neuron, and explain how its impulses are generated. 4. Describe how nerve cells communicate. 5. Explain how neurotransmitters affect behavior, and outline the effects of acetylcholine and the endorphins. 6. Explain how drugs other chemicals affect neurotransmission, and de ...
Central Nervous System (CNS)
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Depth perception - Bremerton School District
Depth perception - Bremerton School District

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R24Summary Statement - University of Illinois Archives
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Stimulus (physiology)



In physiology, a stimulus (plural stimuli) is a detectable change in the internal or external environment. The ability of an organism or organ to respond to external stimuli is called sensitivity. When a stimulus is applied to a sensory receptor, it normally elicits or influences a reflex via stimulus transduction. These sensory receptors can receive information from outside the body, as in touch receptors found in the skin or light receptors in the eye, as well as from inside the body, as in chemoreceptors and mechanorceptors. An internal stimulus is often the first component of a homeostatic control system. External stimuli are capable of producing systemic responses throughout the body, as in the fight-or-flight response. In order for a stimulus to be detected with high probability, its level must exceed the absolute threshold; if a signal does reach threshold, the information is transmitted to the central nervous system (CNS), where it is integrated and a decision on how to react is made. Although stimuli commonly cause the body to respond, it is the CNS that finally determines whether a signal causes a reaction or not.
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