Abstract

The data presented in this article is related to the research article entitled “Age-related Differences in BOLD Modulation to Cognitive Control Costs in a Multitasking Paradigm: Global Switch, Local Switch, and Compatibility-Switch Costs” (Nashiro et al., 2018) [1]. This article describes age-related differences in accuracies for various cognitive costs incurred during task switching across three different age-cohorts: younger (18–35 years), younger-old (50–64 years) and older-old (65–80 years). The cognitive costs evaluated were global switch costs (GSC), local switch costs (LSC) and compatibility switch costs (CSC). Whole brain analyses were conducted to determine the brain regions sensitive to these cognitive costs, irrespective of age. Furthermore, age-related differences in brain-behavior relationships were evaluated by correlating activations from these regions with global switch costs, indexed by both response times and accuracies, for younger and older adults separately. Activations of age-sensitive regions during the task, where younger adults activated more than the combined groups of older adults, were also correlated with response times and accuracies to determine age-related differences in brain-behavior relationships of these under-recruited brain regions by older adults.

Highlights

  • Imaging proceduresScanning was performed with a Philips Achieva 3T MR scanner (Philips Medical Systems, Andover, MA, USA) with a 32-channel head coil

  • For the brain-behavior correlations, ROIs that were sensitive to two different type of cognitive costs, viz., Global Switch Cost (GSC) and Local Switch Cost (LSC), were first obtained, irrespective of age

  • Three type of cognitive control costs were evaluated in this study: global switch cost (GSC), local switch cost (LSC), and compatibility switch cost (CSC)

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Summary

Imaging procedures

Scanning was performed with a Philips Achieva 3T MR scanner (Philips Medical Systems, Andover, MA, USA) with a 32-channel head coil. High-resolution anatomical images were acquired, using a transverse MPRAGE T1-weighted sequence with the following parameters (TR 1⁄4 8.1 ms; TE 1⁄4 3.7 ms; flip angle 1⁄4 12°; acquisition matrix 1⁄4 256 Â 204; voxel size 1⁄4 1 mm3; 160 slices). Each task block had 30 trials in which a stimulus was presented for 3 s, within which the participant responded, followed by a fixation cross. The stimulus-response mapping was consistent for the compatible (Comp) trials (i.e., same hand response was required for the stimulus shown, irrespective of the task requirements), but was inconsistent for the incompatible (Incomp) trials. This resulted in 30 trials each for NS, SW, Comp and Incomp conditions. GSC was assessed from Dual 4 Single contrast, LSC from the SW 4 NS contrast, and CSC from the Incomp 4 Comp contrast

Imaging analyses: preprocessing
H Region
Imaging analyses: age-sensitive brain regions favoring younger adults
Behavioral analyses: accuracy
Findings
Funding sources
Full Text
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