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Development of behavioral parameters and ERPs in a novel-target visual detection paradigm in children, adolescents and young adults.

Rojas-Benjumea MÁ, Sauqué-Poggio AM, Barriga-Paulino CI, Rodríguez-Martínez EI, Gómez CM - Behav Brain Funct (2015)

Bottom Line: Behavioral results showed good performance in children that improved with age: a decrease in RTs and errors and an increase in the d' sensitivity parameter with age were obtained.The modulation of the P3b component by novel targets was statistically significant in all the age groups, but it decreased in amplitude with age.Peak latencies of the FSP and P3b components decreased with age.

View Article: PubMed Central - PubMed

Affiliation: Human Psychobiology Laboratory, Experimental Psychology Department, University of Seville, Sevilla, Spain.

ABSTRACT

Background: The present study analyzes the development of ERPs related to the process of selecting targets based on their novelty.

Methods: One hundred and sixty-seven subjects from 6 to 26 years old were recorded with 30 electrodes during a visual target novelty paradigm.

Results: Behavioral results showed good performance in children that improved with age: a decrease in RTs and errors and an increase in the d' sensitivity parameter with age were obtained. In addition, the C response bias parameter evolved from a conservative to a neutral bias with age. Fronto-polar Selection Positivity (FSP) was statistically significant in all the age groups when standards and targets were compared. There was a statistically significant difference in the posterior Selection Negativity (SN) between the target and standard conditions in all age groups. The P3a component obtained was statistically significant in the emergent adult (18-21 years) and young adult (22-26 years) groups. The modulation of the P3b component by novel targets was statistically significant in all the age groups, but it decreased in amplitude with age. Peak latencies of the FSP and P3b components decreased with age.

Conclusions: The results reveal differences in the ERP indexes for the cognitive evaluation of the stimuli presented, depending on the age of the subjects. The ability of the target condition to induce the modulation of the studied components would depend on the posterior-anterior gradient of cortex maturation and on the gradient of maturation of the low to higher order association areas.

No MeSH data available.


An example of a trial of the Oddball task. Presentation of a sequence of cartoons where the bee was the frequent standard stimulus and other cartoons were the infrequent novel target stimuli. The subject had to respond to the novel stimuli. See the details in the text
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Fig1: An example of a trial of the Oddball task. Presentation of a sequence of cartoons where the bee was the frequent standard stimulus and other cartoons were the infrequent novel target stimuli. The subject had to respond to the novel stimuli. See the details in the text

Mentions: Visual stimuli were cartoons. The size of all the stimuli was adapted in Picassa to equal dimensions of 142 × 228 pixels. The stimulus presentation program used was E-Prime version 2.0, and a SRBOX Cedrus was used to record the subjects’ responses. The novel-target visual paradigm was composed of a total of 120 trials; 25 % of them were novel stimuli, and 75 % were the same standard stimuli. The stimuli were presented at the center of the screen for 700 ms with an ISI of 700 ms, covering a visual angle of 4.56° and situated 2.28° eccentrically in the horizontal meridian. The subjects were told to consider novel stimuli as targets. Subjects were instructed to press the button only when a novel stimulus appeared. The response window was 1400 ms. There was only one block (90 frequent and 30 infrequent stimuli), and the order of stimuli presentation was random. Figure 1 shows an example of a task trial.Fig. 1


Development of behavioral parameters and ERPs in a novel-target visual detection paradigm in children, adolescents and young adults.

Rojas-Benjumea MÁ, Sauqué-Poggio AM, Barriga-Paulino CI, Rodríguez-Martínez EI, Gómez CM - Behav Brain Funct (2015)

An example of a trial of the Oddball task. Presentation of a sequence of cartoons where the bee was the frequent standard stimulus and other cartoons were the infrequent novel target stimuli. The subject had to respond to the novel stimuli. See the details in the text
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4491272&req=5

Fig1: An example of a trial of the Oddball task. Presentation of a sequence of cartoons where the bee was the frequent standard stimulus and other cartoons were the infrequent novel target stimuli. The subject had to respond to the novel stimuli. See the details in the text
Mentions: Visual stimuli were cartoons. The size of all the stimuli was adapted in Picassa to equal dimensions of 142 × 228 pixels. The stimulus presentation program used was E-Prime version 2.0, and a SRBOX Cedrus was used to record the subjects’ responses. The novel-target visual paradigm was composed of a total of 120 trials; 25 % of them were novel stimuli, and 75 % were the same standard stimuli. The stimuli were presented at the center of the screen for 700 ms with an ISI of 700 ms, covering a visual angle of 4.56° and situated 2.28° eccentrically in the horizontal meridian. The subjects were told to consider novel stimuli as targets. Subjects were instructed to press the button only when a novel stimulus appeared. The response window was 1400 ms. There was only one block (90 frequent and 30 infrequent stimuli), and the order of stimuli presentation was random. Figure 1 shows an example of a task trial.Fig. 1

Bottom Line: Behavioral results showed good performance in children that improved with age: a decrease in RTs and errors and an increase in the d' sensitivity parameter with age were obtained.The modulation of the P3b component by novel targets was statistically significant in all the age groups, but it decreased in amplitude with age.Peak latencies of the FSP and P3b components decreased with age.

View Article: PubMed Central - PubMed

Affiliation: Human Psychobiology Laboratory, Experimental Psychology Department, University of Seville, Sevilla, Spain.

ABSTRACT

Background: The present study analyzes the development of ERPs related to the process of selecting targets based on their novelty.

Methods: One hundred and sixty-seven subjects from 6 to 26 years old were recorded with 30 electrodes during a visual target novelty paradigm.

Results: Behavioral results showed good performance in children that improved with age: a decrease in RTs and errors and an increase in the d' sensitivity parameter with age were obtained. In addition, the C response bias parameter evolved from a conservative to a neutral bias with age. Fronto-polar Selection Positivity (FSP) was statistically significant in all the age groups when standards and targets were compared. There was a statistically significant difference in the posterior Selection Negativity (SN) between the target and standard conditions in all age groups. The P3a component obtained was statistically significant in the emergent adult (18-21 years) and young adult (22-26 years) groups. The modulation of the P3b component by novel targets was statistically significant in all the age groups, but it decreased in amplitude with age. Peak latencies of the FSP and P3b components decreased with age.

Conclusions: The results reveal differences in the ERP indexes for the cognitive evaluation of the stimuli presented, depending on the age of the subjects. The ability of the target condition to induce the modulation of the studied components would depend on the posterior-anterior gradient of cortex maturation and on the gradient of maturation of the low to higher order association areas.

No MeSH data available.