2024-03-19T12:12:20Zhttps://repositori.uji.es/oai/requestoai:repositori.uji.es:10234/1620412024-01-29T07:28:09Zcom_10234_8033com_10234_9col_10234_8636
00925njm 22002777a 4500
dc
Bueichekú, Elisenda
author
Miró-Padilla, Anna
author
Palomar-García, María-Ángeles
author
Ventura Campos, Mercedes
author
Parcet, Maria Antonia
author
Barrós-Loscertales, Alfonso
author
Avila, Cesar
author
2016-07
Gaining experience on a cognitive task improves behavioral performance and is thought to enhance brain efficiency. Despite the body of literature already published on the effects of training on brain activation, less research has been carried out on visual search attention processes under well controlled conditions. Thirty-six healthy adults divided into trained and control groups completed a pre-post letter-based visual search task fMRI study in one day. Twelve letters were used as targets and ten as distractors. The trained group completed a training session (840 trials) with half the targets between scans. The effects of training were studied at the behavioral and brain levels by controlling for repetition effects using both between-subjects (trained vs. control groups) and within-subject (trained vs. untrained targets) controls. The trained participants reduced their response speed by 31% as a result of training, maintaining their accuracy scores, whereas the control group hardly changed. Neural results revealed that brain changes associated with visual search training were circumscribed to reduced activation in the posterior parietal cortex (PPC) when controlling for group, and they included inferior occipital areas when controlling for targets. The observed behavioral and brain changes are discussed in relation to automatic behavior development. The observed training-related decreases could be associated with increased neural efficiency in specific key regions for task performance.
BUEICHEKÚ, Elisenda, et al. Reduced posterior parietal cortex activation after training on a visual search task. NeuroImage, 2016, vol. 135, p. 204-213.
http://hdl.handle.net/10234/162041
http://dx.doi.org/10.1016/j.neuroimage.2016.04.059
Attention
Automaticity
Functional Magnetic Resonance Imaging
Priority maps
Visual selection
Reduced posterior parietal cortex activation after training on a visual search task