Symmetry breaking (and preservation)

The concept of symmetry in physics refers to the set of invariances of a system that is preserved when some operation is performed on the system. For example, a square rotated by 90aa is indistinguishable from the original and has symmetry under rotation. This is symmetry preservation or the maintenance of a particular invariance between …

Sympathetic nervous system (SNS)

The branch of the autonomic nervous system that plays the major role in an activated state or stress response, and associated with, for example, increased heart rate, dilated pupils, higher blood pressure, and inhibited digestive processes. See Autonomic nervous system (ANS), Catecholamines, Central nervous system (CNS), Cholinergic neurotransmitter system, Epinephrine (or adrenaline), Nerve Growth Factor …

Symbols

A type of signifier or representational vehicle.  In Piagetian theory, symbols include such representations as images, pictures, gestures and the use of objects or movements to represent meanings.  In contrast to signs (words), symbolic meanings are more personal, less generative, and are more likely to resemble their referents in some way.  See Collective agency, Communication, …

Syllables

Words can be composed of one or more syllables.  Syllables are composed of a central vowel nucleus optionally preceded by a consonant cluster onset and optionally followed by a consonantal offset or coda.  See Phonics, Syllabic structure, Syllable-final position, Syllable-initial position