Memory & Cognition Flashcards
Memory
active system that receives information from the senses, organizes and alters it for storage, and retrieves it when needed.
Encoding
set of mental operations performed on sensory information to convert it into a usable form for storage in the brain.
Storage
Holding onto information for a period of time.
Retrieval
Getting information from storage into a form that can be used.
Sensory Memory
The first stage of memory, where sensory information is briefly stored for a fraction of a second.
Short-Term Memory
The second stage, where information is held for about 20-30 seconds and can typically hold 7±2 items.
Long-Term Memory
The final stage, where information is stored more permanently and can last from minutes to a lifetime.
Information-Processing Model
Compares memory processing to computer memory, involving a series of three stages: encoding, storage, and retrieval.
Parallel Distributed Processing (PDP) Model
Proposes that memory processes occur simultaneously across a large network of neural connections.
Levels-of-Processing Model
Suggests that deeper processing of information based on its meaning leads to better and longer-lasting memory retention.
Sensory Memory
The initial stage of memory where information enters the nervous system through the sensory systems.
Selective Attention
The ability to focus on one specific stimulus while ignoring other sensory inputs.
Short-Term Memory (Working Memory)
A memory system that holds information for brief periods while being used, typically around 12-30 seconds.
Capacity of Short-Term Memory
Approximately 7 items (± 2), allowing for 5 to 9 bits of information.
Chunking
Combining bits of information into meaningful units (chunks) to increase storage capacity in short-term memory.
Maintenance Rehearsal
Repeatedly verbalizing or thinking about information to maintain it in short-term memory.
Encoding in STM
Short-term memories are primarily encoded in auditory form.
Interference in STM
Short-term memory is susceptible to interference; interruptions can cause the individual to lose track of the information.
Long-Term Memory (LTM)
The memory system where information is stored for extended periods, often permanently.
Elaborative Rehearsal
A technique for transferring information from short-term memory (STM) to long-term memory (LTM) by making it meaningful.
Consolidation
Changes in the structure and functioning of neurons that occur when a memory is formed.
Long-Term Potentiation
Increased sensitivity and number of synaptic receptors due to repeated stimulation, enhancing memory formation.
Nondeclarative (Implicit) Memory
A type of long-term memory involving skills, procedures, and conditioned responses that are not consciously recalled.
Hippocampus
Brain region crucial for the formation of long-term memories.