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Related Concept Videos

Interference and Decay01:16

Interference and Decay

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Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
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Long-Term Memory01:18

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Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
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Radioactive Decay and Radiometric Dating02:48

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Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
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RNA Interference01:23

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RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
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Nonsense-mediated mRNA Decay02:27

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The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
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Interference and Diffraction02:18

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Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
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Diffusion modeling of interference and decay in auditory short-term memory.

Tyler D Bancroft1,2, Tyler M Ensor3, William E Hockley4

  • 1Department of Psychology, St. Thomas University, Fredericton, NB, E3B 5G3, Canada. bancroft@stu.ca.

Experimental Brain Research
|May 18, 2019
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Summary
This summary is machine-generated.

Forgetting in short-term memory can be caused by both decay and interference. A computational model shows these processes can happen together, and neither alone explains all memory loss.

Keywords:
AuditoryDecayDiffusionInterferenceModelShort-term memory

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Computational Modeling

Background:

  • Forgetting from working and short-term memory is a key area of cognitive research.
  • Decay and interference are two prominent theories explaining memory loss.

Purpose of the Study:

  • To investigate the co-occurrence of decay and interference in short-term memory.
  • To evaluate the explanatory power of individual forgetting mechanisms.

Main Methods:

  • Application of a computational model to data from a short-term memory task.
  • Analysis of forgetting patterns within a single experimental paradigm.

Main Results:

  • Evidence suggests that both decay and interference can operate concurrently.
  • Neither decay nor interference, in isolation, fully accounts for observed forgetting.

Conclusions:

  • Forgetting in short-term memory is likely a complex process involving multiple mechanisms.
  • Computational models are valuable for dissecting the interplay of different memory processes.