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Several factors are considered while creating a patient's care plan. Motivation is a factor in improving communication, and patients often require encouragement to try different approaches involving significant change. It is essential to involve the patient and family in decisions about the plan of care to determine whether the suggested methods are acceptable. Consider meeting critical comfort and safety needs before introducing new communication methods and techniques. Allow adequate time...
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Hierarchical Structure in Sequence Processing: How to Measure It and Determine Its Neural Implementation.

Julia Uddén1,2, Mauricio de Jesus Dias Martins3,4,5, Willem Zuidema6

  • 1Department of Psychology, Department of Linguistics, Stockholm University.

Topics in Cognitive Science
|August 1, 2019
PubMed
Summary
This summary is machine-generated.

Hierarchical structure is crucial for human cognition, particularly in language. While a neural circuit is implicated, its exact functions in processing sequences and hierarchies require further research.

Keywords:
Hierarchical structureNested groupingNeural signaturesSequence processing

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Area of Science:

  • Cognitive Neuroscience
  • Psycholinguistics
  • Computational Linguistics

Background:

  • Hierarchically structured representations are fundamental to human cognition across various domains.
  • Understanding these structures is key to deciphering complex cognitive processes like language.

Purpose of the Study:

  • To define key concepts like "sequence" and "hierarchy" in cognitive representations.
  • To identify observable signatures of hierarchical structure in behavioral and neuroimaging data.
  • To review evidence for hierarchical processing in human cognition.

Main Methods:

  • Review of classic psycholinguistic methods.
  • Examination of artificial grammar learning and sentence processing literature.
  • Analysis of functional magnetic resonance imaging (fMRI) studies on hierarchical structure.

Main Results:

  • Behavioral methods offer insights into sequence and hierarchy detection.
  • Neuroimaging data, particularly fMRI, provides evidence for neural correlates.
  • A consensus neural circuit involving the inferior frontal gyrus, superior temporal sulcus, and arcuate fasciculus is identified.

Conclusions:

  • A specific neural circuit is broadly accepted to support hierarchical processing.
  • The precise computational roles within this circuit remain largely unknown.
  • Further progress necessitates an explicit theoretical framework and empirical testing of alternative hypotheses.