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The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
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A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...
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Updated: Jan 8, 2026

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Evidence for Abstract Codes in Parietal Cortex Guiding Prospective Working Memory.

Jongmin Lee1, David De Vito2, Jacob A Miller3

  • 1Department of Psychology, Florida State University, Tallahassee, Florida 32304 jongmin.lee.529@gmail.com.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|December 23, 2025
PubMed
Summary
This summary is machine-generated.

Working memory (WM) helps us prepare for the future by transforming past sensory details into abstract codes. The intraparietal sulcus (IPS) plays a key role in this abstraction process, improving future-oriented behavior.

Keywords:
abstractionfMRIparietal cortexprospectivevisual cortexworking memory

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Area of Science:

  • Cognitive Neuroscience
  • Neuroimaging
  • Human Behavior

Background:

  • Working memory (WM) is crucial for bridging the past and future by maintaining and manipulating information.
  • Previous research indicates visual stimuli are decoded from fMRI signals in the visual cortex (VC) and intraparietal sulcus (IPS), suggesting these areas sustain recent past information.
  • The transformation of concrete sensory information into abstract codes for future cognition remains poorly understood.

Purpose of the Study:

  • To investigate how the brain transforms concrete sensory representations of the past into abstract codes for future preparation.
  • To identify the neural mechanisms underlying abstraction within working memory.
  • To explore the role of the intraparietal sulcus (IPS) in abstract coding for future behavior.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to analyze brain activity in human participants.
  • Participants maintained spatial locations in WM, embedded within a learned spatial sequence, across hemifields.
  • Distinct concrete spatial locations (hemifield-specific) and abstract sequence positions (hemifield-general) were tracked, along with past and future representations.

Main Results:

  • Concrete past locations were successfully decoded from fMRI signals in the VC and IPS.
  • Representations shifted from past to future locations in both VC and IPS in anticipation of a probe.
  • Abstract coding of future sequence positions was observed in the IPS, correlating with faster performance.

Conclusions:

  • The IPS sustains abstract codes to facilitate future preparation, demonstrating a transformation from sensory past to abstract future representations.
  • Abstraction within WM, particularly in the IPS, is linked to enhanced behavioral efficiency in future-oriented tasks.
  • These findings reveal neural mechanisms for transforming past experiences into abstract representations that guide future actions.