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Related Concept Videos

Chunking and Rehearsal in Sensory Memory01:22

Chunking and Rehearsal in Sensory Memory

Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of information more...

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Related Experiment Video

Updated: May 31, 2026

Experience is Instrumental in Tuning a Link Between Language and Cognition: Evidence from 6- to 7- Month-Old Infants' Object Categorization
05:35

Experience is Instrumental in Tuning a Link Between Language and Cognition: Evidence from 6- to 7- Month-Old Infants' Object Categorization

Published on: April 19, 2017

Random local temporal structure of category fluency responses.

David J Meyer1, Jason Messer, Tanya Singh

  • 1Case Western Reserve University, 11900 Euclid Avenue, Cleveland, OH 44106, USA.

Journal of Computational Neuroscience
|July 9, 2011
PubMed
Summary
This summary is machine-generated.

The Category Fluency Test (CFT) reveals cognitive function by analyzing response times. De-trended inter-call times in the CFT follow a Weibull distribution, offering new insights into semantic memory navigation.

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Related Experiment Videos

Last Updated: May 31, 2026

Experience is Instrumental in Tuning a Link Between Language and Cognition: Evidence from 6- to 7- Month-Old Infants' Object Categorization
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Published on: April 19, 2017

Comparing the Frequency Effect Between the Lexical Decision and Naming Tasks in Chinese
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Measuring Statistical Learning Across Modalities and Domains in School-Aged Children Via an Online Platform and Neuroimaging Techniques
08:05

Measuring Statistical Learning Across Modalities and Domains in School-Aged Children Via an Online Platform and Neuroimaging Techniques

Published on: June 30, 2020

Area of Science:

  • Cognitive Neuroscience
  • Psychometrics
  • Computational Linguistics

Background:

  • The Category Fluency Test (CFT) measures semantic memory retrieval, crucial for assessing cognitive impairment in dementia.
  • Patient response intensity in CFT decays exponentially, with faster decay indicating greater impairment.
  • Existing research treats decay rate as a global diagnostic parameter.

Purpose of the Study:

  • To analyze the statistical properties of de-trended inter-call times in the CFT.
  • To explore the local (micro) structure of response generation.
  • To introduce a new interpretation of semantic space navigation.

Main Methods:

  • Statistical analysis of de-trended inter-call times from the Category Fluency Test.
  • Application of probability distributions to model response intervals.
  • Utilizing the Weibull distribution for analyzing inter-call time data.

Main Results:

  • De-trended inter-call times in the CFT are well-approximated by the Weibull Distribution.
  • The Weibull distribution naturally arises from the statistical properties of the response generation process.
  • This finding provides a novel micro-level understanding of cognitive processes during the CFT.

Conclusions:

  • The Weibull distribution offers a robust model for de-trended inter-call times in the CFT.
  • This approach enhances our understanding of semantic memory navigation in cognitive tasks.
  • The study proposes a new micro-level diagnostic parameter for cognitive function assessment.