Where are different parts of memory stored

• What does the sensory register store?

  Raw sensory input
• What is the iconic store responsible for?


  Visual information
• What does the echoic store process?

  Auditory information
• What is the duration of the sensory register?

  Less than 1 second
• What is the capacity of the sensory register?

  Very large
• How is information coded in the sensory register?

  Modality-specific
• What is the purpose of short-term memory (STM)?

  Temporary store for current information
• Where is short-term memory mainly stored?

  Prefrontal cortex
• What is the duration of short-term memory?

  18–30 seconds
• What is the capacity of short-term memory?

  7±2 items
• How is information coded in short-term memory?

  Acoustic
• What is the function of long-term memory (LTM)?


  Permanent memory store
• Where is long-term memory stored?

  Across the cortex
• What role does the hippocampus play in long-term memory?

  It aids in consolidation
• What is the duration of long-term memory?

  Unlimited
• What is the capacity of long-term memory?

  Unlimited
• How is information coded in long-term memory?

  Mainly semantic
• What are the key differences between sensory register, short-term memory, and long-term memory?

  • Sensory Register:
  • Duration: <1 sec
  • Capacity: Very large
  • Coding: Modality-specific
  • Short-Term Memory (STM):
  • Duration: 18–30 secs
  • Capacity: 7±2 items
  • Coding: Acoustic
  • Long-Term Memory (LTM):
  • Duration: Unlimited
  • Capacity: Unlimited
  • Coding: Mainly semantic