psychological problems Flashcards
(39 cards)
What does ANS stand for?
Autonomic nervous system
The ANS operates involuntarily and has two main divisions: sympathetic and parasympathetic.
What is the CNS made up of?
The brain and spinal cord
The CNS is where all complex commands and decisions are made.
What are the two main components of the nervous system?
Central nervous system (CNS) and peripheral nervous system (PNS)
What is the function of the PNS?
Transmits information about voluntary activity
The PNS communicates between the CNS and the rest of the body and coordinates some reflex responses.
What does SNS stand for?
Somatic nervous system
The SNS transmits information from sense organs to the CNS and directs muscle actions.
Define the fight or flight response.
Immediate physiological response to a threatening or stressful situation
The sympathetic division of the ANS triggers the release of adrenaline.
What is the James-Lange theory?
A theory of emotion suggesting physiological changes occur first, followed by the brain’s interpretation as an emotion.
What is an emotion?
A strong feeling or mood that has important motivational properties.
What are excitatory neurotransmitters?
Neurotransmitters that increase the positive charge of the next neuron
Examples include adrenaline.
What are inhibitory neurotransmitters?
Neurotransmitters that increase the negative charge of the next neuron
An example is serotonin.
What are neurons?
Cells that communicate messages through electrical and chemical signals.
What is a neurotransmitter?
A chemical released from synaptic vesicles that sends signals across the synaptic cleft.
Define synaptic transmission.
The process by which neighboring neurons communicate with each other.
What does Hebb’s theory of learning suggest?
Learning causes synaptic connections between groups of neurons to become stronger.
What is the cerebellum?
The ‘little brain’ that coordinates movement with sensory input and has a role in cognition.
What is the cerebral cortex?
The thin layer of brain tissue responsible for conscious awareness.
What does localization refer to in the brain?
The theory that different brain areas are responsible for specific functions and behaviors.
What is the interpretive cortex?
An area of the temporal lobe where interpretations of memories are stored.
Define cognitive neuroscience.
The study of how mental processes and brain activity influence one another.
What is neurological damage?
Any event that results in neuron damage in the brain, leading to loss of function or change in behavior.
What is a CT scan?
A computerized tomography scan that creates detailed images of the inside of the body using X-rays.
What does fMRI stand for?
Functional magnetic resonance imaging
fMRI measures blood oxygen levels in the brain.
What is a PET scan?
Positron emission tomography scan that allows live brain activity to be observed.
What is episodic memory?
Memory for personal events, including details about when the events occurred.