Mental maze solving: directional fMRI tuning and population coding in the superior parietal lobule.

Journal article

The superior parietal lobule (SPL) of six human subjects was imaged at 4 T during mental traversing of a directed maze path. Here we demonstrate the orderly involvement of the SPL in this function, as follows. Forty-two percent of the voxels were tuned with respect to the direction of the maze path. This suggests a coherent tuning of local neuronal populations contributing to the change of the single-voxel BOLD signal. Preferred directions ranged throughout the directional continuum of 360 de...

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Authors: Gourtzelidis, P; Tzagarakis, C; Lewis, S; Crowe, D; Auerbach, E

• Publication status: Published
• Journal: Experimental brain research
• Volume: 165
• Issue: 3
• Pages: 273-282
• Publication date: 2005-09-01
• DOI: 10.1007/s00221-005-2298-6
• EISSN: 1432-1106
• ISSN: 0014-4819
• Language: English
• Keywords: Mental Processes; Adult; Photic Stimulation; Image Processing, Computer-Assisted; Magnetic Resonance Imaging; Male; Maze Learning; Parietal Lobe; Humans; Female; Oxygen; Space Perception; Functional Laterality; Neurons; Cluster Analysis