Similar behaviour, different brain patterns: Age-related changes in neural signatures of ignoring
We measured behavioural performance and fMRI activity whilst old and young adults performed a temporal segmentation task (‘preview search’). Being able to select parts of the visual world to be attended or ignored is a critical visual skill. Both old and young adults were able to improve their perfo...
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| Veröffentlicht in: | NeuroImage (Orlando, Fla.) Fla.), 2012-02, Vol.59 (4), p.4113-4125 |
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| container_title | NeuroImage (Orlando, Fla.) |
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| creator | Allen, Harriet A. Payne, Helen |
| description | We measured behavioural performance and fMRI activity whilst old and young adults performed a temporal segmentation task (‘preview search’). Being able to select parts of the visual world to be attended or ignored is a critical visual skill. Both old and young adults were able to improve their performance on a difficult search task when some of the distracter items were presented earlier than the remainder. Comparisons of brain activity and functional connectivity, however, suggested that the underlying mechanisms are quite different for the two age groups. Older adults' activation patterns do not correspond to those predicted by simple increased involvement of frontal regions reflecting higher demand with age but seem to suggest that changes in brain activation patterns propagate throughout the cortex.
► Compared old and young adults in difficult search task. ► Old matched young in behaviour. ► Old use more posterior brain regions and have different connectivity patterns. |
| doi_str_mv | 10.1016/j.neuroimage.2011.10.070 |
| format | Article |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Age Age Factors Aged Aged, 80 and over Attention Attention - physiology Cerebral Cortex - physiology Color Compensation Connectivity Female fMRI Humans Magnetic Resonance Imaging Male Older people Reaction Time - physiology Search Visual Perception - physiology Visual task performance Young Adult |
| title | Similar behaviour, different brain patterns: Age-related changes in neural signatures of ignoring |
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