This principle refers to learning that involves strengthening the connection of coactive neurons and often stated as "Neurons that fire together, wire together" Repeated coactivity of the same subset of neurons, in response to the same stimulus has a cumulative effect, resulting in the strong connections. What is the name of this principle?

Hebbian learning

Explanation: This is a type of learning which involves strengthening connections between neurons which work together. The repeated exposure to a particular stimulus can strengthen connections within a distinctive subset of cortical neurons, and this subset can provide a reliable basis for identifying the stimulus that is activating them.

It has been proven that even when an individual encounters an incomplete version of a familiar stimulus with only some of the subset of neurons representing that familiar stimulus activated at first, the connections already established through repeated coactivity will produce results that complete the familiar pattern.

the earth’s crust is broken into separate pieces called tectonic plates (fig. 7.14). recall that the crust is the solid, rocky, outer shell of the planet. it is composed of two distinctly different types of material: the less-dense continental crust and the more-dense oceanic crust. both types of crust rest atop solid, upper mantle material. the upper mantle, in turn, floats on a denser layer of lower mantle that is much like thick molten tar.

each tectonic plate is free-floating and can move independently. earthquakes and volcanoes are the direct result of the movement of tectonic plates at fault lines. the term fault is used to describe the boundary between tectonic plates. most of the earthquakes and volcanoes around the pacific ocean basin—a pattern known as the “ring of fire”—are due to the movement of tectonic plates in this region. other observable results of short-term plate movement include the gradual widening of the great rift lakes in eastern africa and the rising of the himalayan mountain range. the motion of plates can be described in four general patterns:

collision: when two continental plates are shoved together

subduction: when one plate plunges beneath another (fig. 7.15)

spreading: when two plates are pushed apart (fig. 7.15)

transform faulting: when two plates slide past each other (fig. 7.15)

b. the american revolution