Serotonin is a neurotransmitter primarily found in the brain, intestines, and blood. In psychology, serotonin plays a significant role in mood regulation, emotional well-being, sleep, appetite, and cognitive functions. Abnormalities in serotonin levels or its neural pathways are often associated with mood disorders like depression and anxiety.| Simply Psychology
A synapse is the junction where two neurons communicate without physically touching.| Simply Psychology
Dopamine is a neurotransmitter in the brain associated with pleasure, reward, motivation, and motor control. In psychology, it's linked to feelings of gratification and is implicated in mood disorders, addiction, and certain behaviors when its levels are imbalanced.| Simply Psychology
Neurotransmitters are chemical messengers that play a vital role in how your brain and body communicate. They affect everything from your mood and memory to your heartbeat and breathing.| Simply Psychology
The Central Nervous System (CNS) consists of the brain and spinal cord. It acts as the body's control center, processing sensory information and directing responses. The CNS coordinates both voluntary activities, like movement, and involuntary ones, such as breathing and heartbeat.| Simply Psychology
The sympathetic nervous system is a branch of the autonomic nervous system that prepares the body for "fight or flight" responses during stressful situations. It increases heart rate, dilates pupils, and inhibits digestion, among other functions, to mobilize the body's resources for immediate action.| Simply Psychology
A neuron is a nerve cell that processes and transmits information through electrical and chemical signals in the nervous system. Neurons consist of a cell body, dendrites (which receive signals), and an axon (which sends signals). Synaptic connections allow communication between neurons, facilitating the relay of information throughout the body.| Simply Psychology
The brain's reward system is a network of structures responsible for pleasure, motivation, and reinforcement learning. Central to this system are the Ventral Tegmental Area (VTA) and the Nucleus Accumbens (NAc). When a rewarding stimulus is perceived, dopamine is released from the VTA, acting on the NAc, leading to feelings of pleasure. Dysfunctions in this pathway can underlie addiction and other behavioral disorders.| Simply Psychology
The fight or flight response is a physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival. It prepares your body to either confront or flee from the threat by triggering changes like increased heart rate, quickened breathing, and heightened alertness.| Simply Psychology
