African elephants are the largest land animals on Earth. They are slightly larger than their Asian cousins and can be identified by their larger ears that look somewhat like the continent of Africa.
Eratosthenes, in full Eratosthenes of Cyrene, (born c. 276 bce, Cyrene, Libya—died c. 194 bce, Alexandria, Egypt), Greek scientific writer, astronomer, and poet, who made the first measurement of the size of Earth for which any details are known.
Long-term potentiation is the persistent strengthening of synapses based on recent patterns of activity: it occurs when a neuron shows an increased excitability over time due to a repeated pattern, behavior, or response.
Glutamate (also called glutamic acid) is the most common excitatory neurotransmitter in the central nervous system. NMDA glutamate receptors, in particular, are a necessary component in memory formation, as modeled by long term potentiation.
Long-term potentiation (LTP) is a process in which synapses are strengthened. It has been the subject of much research, because of its likely role in several types of memory.
The most famous example of action potentials are found as nerve impulses in nerve fibers to muscles. Neurons, or nerve cells, are stimulated when the polarity across their plasma membrane changes.
It consists of four phases; hypopolarization, depolarization, overshoot, and repolarization. An action potential propagates along the cell membrane of an axon until it reaches the terminal button.
An action potential occurs when a neuron sends information down an axon, away from the cell body. The action potential is an explosion of electrical activity that is created by a depolarizing current.
On the positive side, the sub-aquatic realm is often described as an Atlantis-like paradise, not too dissimilar to the real world but better in every way.
According to this myth, the pink river dolphin, again sometimes in human form, will take lone swimmers – children and adults, men and women — to the mystical underwater world of Encante, from which they can never return.