Visual evoked potentials to illusory reversals of the Necker cube

Brian O'Donnell, T. Hendler, N. K. Squires

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Sensory adaption and cognitive evaluation have been proposed as explanations of illusory figure reversals. The effect of variations in the perceived orientation of a Necker cube on visual evoked potentials (VEPs) was studied to test these two hypotheses. VEPs associated with perceptual reversals and non-reversals of a Necker cube were compared with VEPs elicited by a sequence of physically varying cubical figures. Amplitude differences in the early VEP components consistent with adaption effects were not detected. Both types of reversals were associated with a late positive component (400-700 ms), which was smaller in amplitude in the illusory condition. The late positivity to illusory reversals was also distinguished by a broad (200-700 ms) positive component over frontal and central recording sites which was absent over O(z). These findings suggest that illusory reversals are more difficult to discriminate than physical reversals, and require additional cognitive resources for evaluation.

Original languageEnglish (US)
Pages (from-to)137-143
Number of pages7
JournalPsychophysiology
Volume25
Issue number2
StatePublished - 1988
Externally publishedYes

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Visual Evoked Potentials

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)
  • Psychology(all)
  • Experimental and Cognitive Psychology
  • Neuropsychology and Physiological Psychology

Cite this

Visual evoked potentials to illusory reversals of the Necker cube. / O'Donnell, Brian; Hendler, T.; Squires, N. K.

In: Psychophysiology, Vol. 25, No. 2, 1988, p. 137-143.

Research output: Contribution to journalArticle

O'Donnell, B, Hendler, T & Squires, NK 1988, 'Visual evoked potentials to illusory reversals of the Necker cube', Psychophysiology, vol. 25, no. 2, pp. 137-143.
O'Donnell, Brian ; Hendler, T. ; Squires, N. K. / Visual evoked potentials to illusory reversals of the Necker cube. In: Psychophysiology. 1988 ; Vol. 25, No. 2. pp. 137-143.
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