1-2-AX working memory task

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1-2-AX Working Memory Task[edit | edit source]

The 1-2-AX working memory task is a cognitive task used to assess working memory and executive function. It is a variant of the AX-CPT (AX Continuous Performance Task) and is designed to measure the ability to maintain and update context information in working memory.

Overview[edit | edit source]

The 1-2-AX task involves presenting participants with a series of stimuli, typically letters and numbers, and requiring them to respond based on a specific sequence of cues and probes. The task is structured to test the participant's ability to hold information in working memory and use it to guide behavior.

In a typical 1-2-AX task, participants are presented with sequences of letters and numbers. The task requires them to respond to a target sequence, such as "1-A-X" or "2-B-Y". The numbers "1" and "2" serve as context cues, while the letters "A" and "B" are the target cues, and "X" and "Y" are the probes. Participants must maintain the context cue in working memory to correctly identify the target sequence.

Task Procedure[edit | edit source]

1. **Presentation of Context Cue**: A number (either "1" or "2") is presented, indicating the context for the upcoming sequence. 2. **Presentation of Target Cue**: A letter (either "A" or "B") follows, serving as the target cue. 3. **Presentation of Probe**: A letter (either "X" or "Y") is presented as the probe. 4. **Response Requirement**: Participants must respond when the correct sequence (e.g., "1-A-X" or "2-B-Y") is detected.

The task requires participants to continuously update and maintain the context cue in working memory to determine whether the probe matches the expected target sequence.

Cognitive Processes Involved[edit | edit source]

The 1-2-AX task is used to study several cognitive processes, including:

  • **Working Memory**: The ability to hold and manipulate information over short periods.
  • **Executive Function**: The capacity to manage and control cognitive processes, including updating and shifting attention.
  • **Context Maintenance**: The ability to maintain context information to guide responses.

Applications[edit | edit source]

The 1-2-AX working memory task is used in research to understand cognitive deficits in various populations, including individuals with schizophrenia, ADHD, and other neuropsychiatric conditions. It is also used to study the effects of aging on cognitive function.

Also see[edit | edit source]

Template:Cognitive Psychology

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Contributors: Prab R. Tumpati, MD