J F Norman


Affiliation: Western Kentucky University
Country: USA


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    Norman J, Crabtree C, Norman H, Moncrief B, Herrmann M, Kapley N. Aging and the visual, haptic, and cross-modal perception of natural object shape. Perception. 2006;35:1383-95 pubmed
    ..Overall, the results of the experiments reveal that older observers can effectively perceive 3-D shape from both vision and haptics. ..
  2. Norman J, Kappers A, Beers A, Scott A, Norman H, Koenderink J. Aging and the haptic perception of 3D surface shape. Atten Percept Psychophys. 2011;73:908-18 pubmed publisher
    ..The results of the current study demonstrate that while older adults do possess reductions in tactile sensitivity and acuity, they nevertheless can effectively perceive 3D surface shape from haptic exploration. ..
  3. Norman J, Dowell C, Higginbotham A, Fedorka N, Norman H. Sex and age modulate the visual perception of distance. Atten Percept Psychophys. 2018;80:2022-2032 pubmed publisher
    ..The results of our study demonstrate that age and sex are important variables that significantly affect the visual perception of distance. ..
  4. Norman J, Cheeseman J, Adkins O, Cox A, Rogers C, Dowell C, et al. Aging and solid shape recognition: Vision and haptics. Vision Res. 2015;115:113-8 pubmed publisher
  5. Norman J, Adkins O, Norman H, Cox A, Rogers C. Aging and the visual perception of exocentric distance. Vision Res. 2015;109:52-8 pubmed publisher
    ..The results demonstrate that increases in age can produce significant improvements in the visual ability to perceive the magnitude of exocentric distances. ..
  6. Norman J, Adkins O, Pedersen L, Reyes C, Wulff R, Tungate A. The visual perception of exocentric distance in outdoor settings. Vision Res. 2015;117:100-4 pubmed publisher
  7. Norman J, Bartholomew A. Blindness enhances tactile acuity and haptic 3-D shape discrimination. Atten Percept Psychophys. 2011;73:2323-31 pubmed publisher
    ..The results of the present study demonstrate that blindness does lead to an enhancement of tactile abilities, but they also suggest that early visual experience may play a role in facilitating haptic 3-D shape discrimination. ..
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    Norman J, Phillips F, Holmin J, Norman H, Beers A, Boswell A, et al. Solid shape discrimination from vision and haptics: natural objects (Capsicum annuum) and Gibson's "feelies". Exp Brain Res. 2012;222:321-32 pubmed
    ..g., participants able to actively manipulate objects and see them from a variety of perspectives), we found no significant difference between visual and haptic solid shape discrimination. ..
  9. Norman J, Adkins O, Pedersen L. The visual perception of distance ratios in physical space. Vision Res. 2016;123:1-7 pubmed publisher
    ..Although both under- and overestimation occurred in the current experiment, the results nevertheless demonstrate that human adults can reliably compare environmental distances in different directions. ..

More Information


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    Adkins O, Norman J. The Visual Aesthetics of Snowflakes. Perception. 2016;: pubmed
    ..The results for the snowflakes were more uniform: 91% of participants perceived only the complex snowflakes as being most beautiful. ..
  2. Dowell C, Norman J, Moment J, Shain L, Norman H, Phillips F, et al. Haptic shape discrimination and interhemispheric communication. Sci Rep. 2018;8:377 pubmed publisher
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    Norman J, Norman H, Swindle J, Jennings L, Bartholomew A. Aging and the discrimination of object weight. Perception. 2009;38:1347-54 pubmed
    ..4% and 6.6% of the standard for the older and younger observers, respectively. The current findings of an age-related deterioration in the ability to discriminate lifted weight extend and disambiguate the results of earlier research. ..
  4. Norman J, Bartholomew A, Burton C. Aging preserves the ability to perceive 3D object shape from static but not deforming boundary contours. Acta Psychol (Amst). 2008;129:198-207 pubmed publisher
    ..e., moving) silhouettes. The reduced ability of older observers to perceive 3D shape from motion is probably due to a low-level deterioration in the ability to detect and discriminate motion itself. ..
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    Norman J, Clayton A, Norman H, Crabtree C. Learning to perceive differences in solid shape through vision and touch. Perception. 2008;37:185-96 pubmed
    ..In general, the results indicate that effective cross-modal shape comparisons can be made between the modalities of vision and active touch, but that complete information transfer does not occur. ..
  6. Norman J, Kappers A, Cheeseman J, Ronning C, Thomason K, Baxter M, et al. Aging and curvature discrimination from static and dynamic touch. PLoS ONE. 2013;8:e68577 pubmed publisher
    ..The results of the current study demonstrate that while older adults can accurately discriminate surface curvature from dynamic touch, they possess significant impairments for static touch. ..
  7. Norman J, Adkins O, Dowell C, Shain L, Hoyng S, Kinnard J. The visual perception of distance ratios outdoors. Atten Percept Psychophys. 2017;79:1195-1203 pubmed publisher
    ..Significant modulatory effects of sex and age occurred, such that the male observers' judgments were the most precise, while those of the older males were the most accurate. ..
  8. Norman J, Adkins O, Dowell C, Hoyng S, Shain L, Pedersen L, et al. Aging and visual 3-D shape recognition from motion. Atten Percept Psychophys. 2017;79:2467-2477 pubmed publisher