| Brain Dynamics and Behavioral Basis of a Higher Level Cognitive Task Contributor(s): Ballan, Meltem (Author) |
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ISBN: 3639366735 ISBN-13: 9783639366730 Publisher: VDM Verlag OUR PRICE: $60.53 Product Type: Paperback - Other Formats Published: June 2011 |
| Additional Information |
| BISAC Categories: - Psychology | Experimental Psychology |
| Physical Information: 0.33" H x 6" W x 9" (0.47 lbs) 140 pages |
| Descriptions, Reviews, Etc. |
| Publisher Description: The important role of intraparietal sulcus (IPS) is well established in the processing of number along with its involvement in the processing of visual objects (i.e., shape, density). However, a direct assessment of the possible influence of quality judgment on quantity judgments of numbers remains unclear. To address this question, the present study investigated whether adult participants would report similar behavioral (i.e. reaction times, (RTs)) and neurophysiological (i.e. high-density electroencephalogram (EEG) scalp recordings) responses for Arabic numbers as represented in different visual qualities.Two novel methods, principal components analysis (PCA) and independent component analysis (ICA), were selected to construct the fundamental spatiotemporal brain dynamics of the task. Prior studies suggest that mental comparison of a stimulus number to a memorized reference number requires longer RTs for numbers close in value to the reference, known as the classical distance effect. However, in our model, the distance perception for medium and far numbers was distracted by visual noise manipulation. |