Memory Functions and Types

Questions and Answers

To provide a model of stereotypical information required to interpret a situation

COLLIE is a subtype of DOG

To instantiate values for a specific instance of a data structure

Bark Signup and view all the answers

To establish the conditions necessary for the script to be activated Signup and view all the answers

Dog becomes better Signup and view all the answers

Vet examines, diagnoses, treats Signup and view all the answers

Examination table, waiting room, medicine Signup and view all the answers

To act as a buffer for stimuli received through senses Signup and view all the answers

7± 2 chunks Signup and view all the answers

~ 70ms Signup and view all the answers

To store knowledge for an unlimited period Signup and view all the answers

~ 1/10 second Signup and view all the answers

Episodic memory Signup and view all the answers

Semantic network Signup and view all the answers

To supports inference through inheritance Signup and view all the answers

Study Notes

Three types of memory functions: sensory memories, short-term memory or working memory, and long-term memory.
Selection of stimuli governed by level of arousal.

Buffers for stimuli received through senses.
Three types: iconic memory (visual stimuli), echoic memory (aural stimuli), and haptic memory (tactile stimuli).
Examples: sparkler trail, stereo sound.
Continuously overwritten.

Scratch-pad for temporary recall.
Characteristics:
- Rapid access (~70ms).
- Rapid decay (~200ms).
- Limited capacity (7±2 chunks).
Examples: phone numbers, random sequences.

Repository for all our knowledge.
Characteristics:
- Slow access (~1/10 second).
- Slow decay, if any.
- Huge or unlimited capacity.
Two types:
- Episodic memory: serial memory of events.
- Semantic memory: structured memory of facts, concepts, skills.
Semantic LTM derived from episodic LTM.

Semantic Network:
- Inheritance: child nodes inherit properties of parent nodes.
- Relationships between bits of information explicit.
- Supports inference through inheritance.
Frames:
- Information organized in data structures.
- Slots in structure instantiated with values for instance of data.
- Type–subtype relationships (e.g., DOG-COLLIE).
Scripts:
- Model of stereotypical information required to interpret situation.
- Script has elements that can be instantiated with values for context (e.g., script for a visit to the vet).