Optimization of Perceptual Learning: Effects of Task Difficulty and External Noise in Older Adults

Overview

Journal Vision Res

Specialty Ophthalmology

Date 2013 Nov 26

PMID 24269381

Citations 11

Authors

Denton J DeLoss

Takeo Watanabe

George J Andersen

Affiliations

Soon will be listed here.

Abstract

Previous research has shown a wide array of age-related declines in vision. The current study examined the effects of perceptual learning (PL), external noise, and task difficulty in fine orientation discrimination with older individuals (mean age 71.73, range 65-91). Thirty-two older subjects participated in seven 1.5-h sessions conducted on separate days over a three-week period. A two-alternative forced choice procedure was used in discriminating the orientation of Gabor patches. Four training groups were examined in which the standard orientations for training were either easy or difficult and included either external noise (additive Gaussian noise) or no external noise. In addition, the transfer to an untrained orientation and noise levels were examined. An analysis of the four groups prior to training indicated no significant differences between the groups. An analysis of the change in performance post-training indicated that the degree of learning was related to task difficulty and the presence of external noise during training. In addition, measurements of pupil diameter indicated that changes in orientation discrimination were not associated with changes in retinal illuminance. These results suggest that task difficulty and training in noise are factors important for optimizing the effects of training among older individuals.

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References

Karni A, Sagi D . Where practice makes perfect in texture discrimination: evidence for primary visual cortex plasticity. Proc Natl Acad Sci U S A. 1991; 88(11):4966-70. PMC: 51788. DOI: 10.1073/pnas.88.11.4966. View

Ivers R, Cumming R, Mitchell P, Attebo K . Visual impairment and falls in older adults: the Blue Mountains Eye Study. J Am Geriatr Soc. 1998; 46(1):58-64. DOI: 10.1111/j.1532-5415.1998.tb01014.x. View

Trick G, Silverman S . Visual sensitivity to motion: age-related changes and deficits in senile dementia of the Alzheimer type. Neurology. 1991; 41(9):1437-40. DOI: 10.1212/wnl.41.9.1437. View

Ball K, Sekuler R . Improving visual perception in older observers. J Gerontol. 1986; 41(2):176-82. DOI: 10.1093/geronj/41.2.176. View

Laird N, Ware J . Random-effects models for longitudinal data. Biometrics. 1982; 38(4):963-74. View

Ahissar M, Hochstein S . Task difficulty and the specificity of perceptual learning. Nature. 1997; 387(6631):401-6. DOI: 10.1038/387401a0. View

Dosher B, Lu Z . Mechanisms of perceptual learning. Vision Res. 2000; 39(19):3197-221. DOI: 10.1016/s0042-6989(99)00059-0. View

Crassini B, Brown B, Bowman K . Age-related changes in contrast sensitivity in central and peripheral retina. Perception. 1988; 17(3):315-32. DOI: 10.1068/p170315. View

Bower J, Watanabe T, Andersen G . Perceptual learning and aging: improved performance for low-contrast motion discrimination. Front Psychol. 2013; 4:66. PMC: 3576628. DOI: 10.3389/fpsyg.2013.00066. View

10.

Curcio C, Millican C, Allen K, KALINA R . Aging of the human photoreceptor mosaic: evidence for selective vulnerability of rods in central retina. Invest Ophthalmol Vis Sci. 1993; 34(12):3278-96. View

11.

Vogels R, Orban G . The effect of practice on the oblique effect in line orientation judgments. Vision Res. 1985; 25(11):1679-87. DOI: 10.1016/0042-6989(85)90140-3. View

12.

Richards E, Bennett P, Sekuler A . Age related differences in learning with the useful field of view. Vision Res. 2006; 46(25):4217-31. DOI: 10.1016/j.visres.2006.08.011. View

13.

Bower J, Andersen G . Aging, perceptual learning, and changes in efficiency of motion processing. Vision Res. 2011; 61:144-56. PMC: 3226881. DOI: 10.1016/j.visres.2011.07.016. View

14.

Andersen G, Ni R, Bower J, Watanabe T . Perceptual learning, aging, and improved visual performance in early stages of visual processing. J Vis. 2010; 10(13):4. PMC: 3136086. DOI: 10.1167/10.13.4. View

15.

Dosher B, Lu Z . Perceptual learning in clear displays optimizes perceptual expertise: learning the limiting process. Proc Natl Acad Sci U S A. 2005; 102(14):5286-90. PMC: 555685. DOI: 10.1073/pnas.0500492102. View

16.

Salthouse T . When does age-related cognitive decline begin?. Neurobiol Aging. 2009; 30(4):507-14. PMC: 2683339. DOI: 10.1016/j.neurobiolaging.2008.09.023. View

17.

Schmolesky M, Wang Y, Pu M, Leventhal A . Degradation of stimulus selectivity of visual cortical cells in senescent rhesus monkeys. Nat Neurosci. 2000; 3(4):384-90. DOI: 10.1038/73957. View

18.

Fahle M, Edelman S . Long-term learning in vernier acuity: effects of stimulus orientation, range and of feedback. Vision Res. 1993; 33(3):397-412. DOI: 10.1016/0042-6989(93)90094-d. View

19.

Jeter P, Dosher B, Petrov A, Lu Z . Task precision at transfer determines specificity of perceptual learning. J Vis. 2009; 9(3):1.1-13. PMC: 4964592. DOI: 10.1167/9.3.1. View

20.

Fine I, Jacobs R . Perceptual learning for a pattern discrimination task. Vision Res. 2000; 40(23):3209-30. DOI: 10.1016/s0042-6989(00)00163-2. View