A new method of projection stereoscopy.

Bott, E. A.; Chant, S. N. F.

doi:10.1037/h0068931

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For binocular observations, subjects superimposed the right eye field and left eye field by means of adjustable fluid prisms (3). When the four apertures were binocularly combined they were seen as two vertically aligned white disks, each divided into quadrants by a delicate black cross.…”

Section: Appabatosmentioning

confidence: 99%

The dependence of binocular fusion on timing of peripheral stimuli and on central process. 1. Symmetrical flicker.

Baker¹

1952

Canadian Journal of Psychology / Revue canadienne de psychologi

View full text Add to dashboard Cite

WHEN a physical light source is intermittent, the experience of flicker or fusion does not directly depend upon the nature of the peripheral stimulation but rather upon the nature of stimulation at the cortical level. It is known from studies of the optic nerve discharge that at high frequencies of peripheral stimulation the retina responds to every second stimulus (2) and thus is instrumental in modifying the frequency of cortical stimulation which is initiated at the periphery. The experience of fusion, then, is correlated with stimulation at and above a certain intensity, while the experience of flicker is correlated with cortical stimulation below this intensity (6).Two types of fusion may be noted. First, there is temporal fusion. A single receptor unit (or group) when stimulated above a critical frequency gives a sensation of continuous stimulation; that is, the flicker fuses. Second, there is spatial fusion. The stimulus patterns of the right and left eyes are slightly dissimilar and when combined binocularly, giving singleness to the vision field, the subject is said to experience binocular (spatial) fusion. The neuro-physiologist, Sherrington, conducted certain investigations into the nature of binocular fusion by measuring the intermittence rates required to bring about flicker fusion.Sherrington conducted some notable investigations of the integrative action of the nervous system in its motor aspects. One of his major discoveries was that of "correlation of reflexes about a final common path" (8.). He showed thit some reflexes, termed "allied" reflexes, reinforce one another as they emerge along the final common path. Other reflexes, termed "antagonistic" reflexes, inhibit one another from use of the path. He then attempted to determine whether or not integration of sensory experience, too, depended upon the integrative action of a central physiological process. He asked: "Can we at all compare with the simultaneous This is the first of four articles which summarize a Ph.D.

show abstract

Section: Appabatosmentioning

confidence: 99%