study the link between the brain and mental processes, sometimes by observing an organism during a scanning session while the organism performs a specific task.

Explanation:

Such type of biological fields that deals with such type of biological processes that describe or indicate about cognition are called cognitive neuroscience and such type of scientists are known as cognitive neuroscientists. They deal with the mental process that is controlled or affected by the neural circuits. Cognitive science explains about the mind and its functions.

tissue

explanation:

it is actually formed by geoup of cells which is tissue

phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.