What is the clinical evidence from this study?

Study design: Observational. Population: Healthy (n=23). Intervention: N-back task difficulty (3-back) vs. 2-back task. Primary outcome: Prefrontal cortex hemodynamic activation and behavioral data (correct answers).

What question did this study set out to answer?

To assess how task difficulty and experiment duration influence prefrontal cortex mental workload and behavioral accuracy during a working memory challenge.

August 28, 2019PhotonicsOpen Access

Effects of Performance and Task Duration on Mental Workload during Working Memory Task

Q: What does this research mean for the field?

Higher working memory task difficulty and task duration significantly alter prefrontal cortex hemodynamic activation and behavioral performance in healthy individuals. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

View Full Paper

Ask AI

Bookmark

Key result

Higher working memory task difficulty and duration linked to altered PFC activation and behavioral performance.

n=23

Why the study?

The study aimed to understand how subject performance and mental workload during an N-back working memory task vary with task difficulty and duration.

Population

23 healthy subjects

Comparison

2-back vs 3-back task levels and beginning vs end of 3-back task

Design

Pilot observational study

Authors

KKKosar Khaksari ECEmma Condy JMJohn Millerhagen

Discussion

Member takes

Overview

Requires accounting for task load and duration in cognitive fNIRS studies; leaves open translation to clinical populations.

Key Points

To assess how task difficulty and experiment duration influence prefrontal cortex mental workload and behavioral accuracy during a working memory challenge.
Monitored 23 healthy subjects performing an N-back working memory task under two difficulty levels (2-back and 3-back).
Recorded prefrontal cortex hemodynamic responses simultaneously with behavioral performance metrics (correct response rates).
Analyzed hemodynamic activation differences between task difficulty levels and between the early and late stages of the 3-back task.
Significant differences in hemodynamic responses and task performance emerged between the 2-back and 3-back difficulty levels.
Prefrontal hemodynamic activity and behavioral accuracy differed significantly between the start and completion of the 3-back task, reflecting participant learning during the session.

Study Design

Type

Observational (n=23)

Structured PICO

Population

23 healthy subjects performing an N-back working memory task to evaluate mental workload.

Exposure

N-back working memory task (2-back and 3-back levels)

Comparator

Comparison between 2-back and 3-back task levels, and between the beginning and end of the 3-back task

Outcome

Prefrontal cortex (PFC) activation (hemodynamic responses) and behavioral data (correct answers)surrogate

Task difficulty and duration significantly affect prefrontal cortex hemodynamic activation and behavioral performance during working memory tasks.

Cite This Study

Khaksari et al. (2019) conducted an observational in Healthy (n=23). N-back task difficulty (3-back) vs. 2-back task was evaluated on Prefrontal cortex hemodynamic activation and behavioral data (correct answers). Higher working memory task difficulty (3-back vs 2-back) and task duration significantly altered prefrontal cortex hemodynamic activation and behavioral performance in healthy subjects.

synapsesocial.com/papers/6ab0dfe8ff3dc4a02fec4cfb https://doi.org/10.3390/photonics6030094

View Full Paper

Ask AI

Bookmark

August 28, 2019PhotonicsOpen Access

Effects of Performance and Task Duration on Mental Workload during Working Memory Task

View Full Paper

Ask AI

Bookmark

Key result

Higher working memory task difficulty and duration linked to altered PFC activation and behavioral performance.

n=23

Why the study?

The study aimed to understand how subject performance and mental workload during an N-back working memory task vary with task difficulty and duration.

Population

23 healthy subjects

Comparison

2-back vs 3-back task levels and beginning vs end of 3-back task

Design

Pilot observational study

Authors

KKKosar Khaksari ECEmma Condy JMJohn Millerhagen

Discussion

Member takes

Overview

Requires accounting for task load and duration in cognitive fNIRS studies; leaves open translation to clinical populations.

Key Points

To assess how task difficulty and experiment duration influence prefrontal cortex mental workload and behavioral accuracy during a working memory challenge.
Monitored 23 healthy subjects performing an N-back working memory task under two difficulty levels (2-back and 3-back).
Recorded prefrontal cortex hemodynamic responses simultaneously with behavioral performance metrics (correct response rates).
Analyzed hemodynamic activation differences between task difficulty levels and between the early and late stages of the 3-back task.
Significant differences in hemodynamic responses and task performance emerged between the 2-back and 3-back difficulty levels.
Prefrontal hemodynamic activity and behavioral accuracy differed significantly between the start and completion of the 3-back task, reflecting participant learning during the session.

Study Design

Type

Observational (n=23)

Structured PICO

Population

23 healthy subjects performing an N-back working memory task to evaluate mental workload.

Exposure

N-back working memory task (2-back and 3-back levels)

Comparator

Comparison between 2-back and 3-back task levels, and between the beginning and end of the 3-back task

Outcome

Prefrontal cortex (PFC) activation (hemodynamic responses) and behavioral data (correct answers)surrogate

Task difficulty and duration significantly affect prefrontal cortex hemodynamic activation and behavioral performance during working memory tasks.

Cite This Study

synapsesocial.com/papers/6ab0dfe8ff3dc4a02fec4cfb https://doi.org/10.3390/photonics6030094

Also Consider

Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context:

View Full Paper

Ask AI

Bookmark