Fig 1.
A representative set of trials.
During the encoding phase 15 images were shown for 5 seconds each while a stream of auditory letters was played (each for a duration of 1.6 sec, 45 letters in total). In the single-task condition participants had to ignore the sounds. In the dual-task condition, participants had to press a key each time the letter "X" was presented.
Fig 2.
Correlation plot between remote global examination of mental state (auto-GEMS) and cognitive reserve index (CR) score.
Bands represent 95° confidence intervals.
Table 1.
Descriptive statistics for the uncorrected (upper row) and corrected (lower row) auto-GEMS scores.
Table 2.
Positive responses (percentage) to the User Autonomy Questionnaire (YES-NO answer).
Table 3.
Correlations between the User Autonomy Questionnaire individual items, Age, and the auto-GEMS-c score.
Fig 3.
Scatterplot matrix, with jittered bivariate scatter plots below the diagonal and histograms on the diagonal (see Table 5).
Pearson correlation coefficients and linear regression fits with C.I. 95% are reported. The colour gradient, ranging from blue (negative) to red (positive), illustrates the magnitude of correlation. Note the significant negative relationship between auto-GEMS-c and Age and between memory complaints (MAC-Q, increasing with Age) and objective performance both in auto-GEMS-c and in Memo single-task but not with DTC.
Table 4.
Descriptive statistics.
Table 5.
Correlation matrix for cognitive reserve index (CR), memory complaint questionnaire (MAC-Q), cognitive screening (auto-GEMS-c), Age, Memo single-task accuracy, dual task cost (DTC), and Continuous Performance Test (CPT) accuracy.
Fig 4.
Density plots illustrating the age distribution of participants based on the number of Hits and False Alarms (FA) in the auditory Continuous Performance Test (CPT).
Panel A on the left displays the density plot for CPT Hits. The blue curve represents participants with zero Hits, while the red curve represents those with at least one Hit. Panel B on the right showcases the density plot for CPT FA. Here, the blue curve corresponds to participants with no FA, and the red curve represents those with at least one FA.
Fig 5.
Left panel, Memo accuracy as a function of Age and Load (single or dual). Right panel, Memo accuracy as a function of CR, and Age. Bands represent 95° confidence intervals.
Fig 6.
Memo accuracy as a function of auto-GEMS-c, Load (single or dual), and CR. Bands represent 95° confidence intervals.
Fig 7.
Memo accuracy as a function of auto-GEMS-c, Load (single or dual), MAC-Q, and CR.
Bands represent 95° confidence intervals.
Table 6.
Analysis of deviance with the Type III Wald chi-square tests for the Memo task (accuracy).
Fig 8.
CCFI profiles from taxometric analyses of three unique sets of memory indicators, two objective—Memo single-task and DTC, and one subjective MAC-Q.
M = MAMBAC, X = MAXEIG, L = L-MODE, and solid dots = the average CCFI.