Psychology has evolved from ancient thinkers to a widely accepted field. Psychology influences various spheres from marketing to law enforcement
Brain serves as center of nervous system in all vertebrates and most invertebrates. Located in head near sensory organs, responsible for information processing and coordination. Contains approximately 14-16 billion neurons in cerebral cortex. Contains approximately 55-70 billion neurons in cerebellum
Repolarization returns membrane potential to negative value after depolarization. K+ ions efflux causes falling phase of action potential. Process typically takes several milliseconds. Cell hyperpolarizes to resting potential (-70 mV in neuron)
Located at back of head, part of posterior cerebrum. Contains primary visual cortex (Brodmann area 17). Divided into cuneus (above medial sulcus) and lingual gyrus (below). Resting on tentorium cerebelli separating cerebrum from cerebellum
ASMR is a tingling sensation originating from scalp and spreading down spine. Described as pleasant form of paresthesia and low-grade euphoria. Most commonly triggered by specific auditory stimuli. Can be experienced through intentional attention control
Gyrus is a ridge on cerebral cortex surrounded by sulci. Gyri and sulci create folded appearance of mammalian brains. Folds allow larger cortical surface area in smaller skull. Brain undergoes gyrification during fetal and neonatal development