SACHIO NAKAMIZO
Biographic Data
| ID | 8863572 |
|---|---|
| NAME | SACHIO NAKAMIZO |
| GIVEN NAMES | SACHIO |
| FAMILY NAME | NAKAMIZO |
| SIGNATURE | NAKAMIZO S |
| AFFILIATIONS | Department of Psychology, Fukuoka University of Education |
| VERIFIED | No |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 9 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1975 |
| LATEST PUBLICATION YEAR | 2008 |
| H-INDEX | 0 |
Misconvergence to the stimulus plane causes apparent displacement of the stimulus elements seen monocularly 1
When one binocularly views a group of vertical lines through a ring, the outermost line segments (one on each side) seen within the ring are seen monocularly while the segments of the same lines outside the ring are seen binocularly. The monocular segments appear to be displaced outward with respect to the center of the ring and with respect to the corresponding binocular segments outside the ring. Three experiments examined the extent and direct…
New equally readable charts based on anisotropy of peripheral visual acuity 1
Anstis’ equally readable chart for visual acuity has been widely quoted in textbooks on visual perception. However, this chart does not reflect the anisotropy of peripheral visual acuity that has been reported by previous studies. Here, the authors reexamined peripheral visual acuity by measuring resolution thresholds for Landolt rings and recognition thresholds for hiragana letters as a function of retinal eccentricity across two principal retin…
The Pulfrich effect and depth constancy
Perceived depth of the Pulfrich effect was measured as a function of viewing distance and target velocity. The stimulus was a vertical rod, moving sinusoidally back and forth along a horizontal path 22.5 cm long, within the observer's frontoparallel plane. The two independent variables were the viewing distance (1, 2, 3, and 4 m) and the target velocity (.2, .4, and .6 Hz). Observers viewed the stimulus binocularly through a neutral‐density filte…
Oculomotor responses of stereo‐anomalous observers to pulse and ramp disparities
We examined oculomotor responses to binocular disparities of one stereo‐normal and three stereo‐anomalous observers, who were identified through a stereoscopic depth‐discrimination task, in two experimental conditions. In the pulse disparity condition, crossed and uncrossed disparities (1–6°) were briefly presented (for .25–2.0 s). In the ramp disparity condition, disparities were varied continuously with constant velocities (.7–2.0°/s) and with …
Depth perception of stereokinetic cone and absolute distance information
Magnitudes of the apparent depth of eccentric circles and real cone stimuli were measured as a function of viewing distance when they were rotated on a circular disc and viewed monocularly. The diameters of the largest circle and base of the cone were 5, 10, 20, and 40 cm at the viewing distances, 0.5, 1, 2, and 4 m, respectively. The height of each cone was equal to the diameter of its base. The cones were tilted 15 deg from the fronto-parallel …
Effects of eye movements on the apparent depth of moving targets
Experiment I examined the difference limen (DL) for the direction of apparent rotation in depth of the moving target, in which two targets moving sinusoidally, in the fronto-parallel plane with phase difference were dichoptically presented to the eyes either fixating a stationary point or tracking the target. The results indicated that the discriminability to the change in depth for the moving target was reduced during tracking. Experiment II exa…
Magnitudes of disparity vergence responses at different convergence levels
An experiment was conducted with three subjects to examine the relation between the initial convergence level and disparity vergence. Magnitudes of vergence movements were measured by the photo-electric method when target stimuli with 2° or 4° retinal disparity were presented for various exposure durations (100-900 ms) to the eyes directed to an initial fixation stimulus located in the mid-sagittal plane with convergence angles of 3.1°, 6.2°, or …
Effects of Head Movements on Sound Localization With an Electronic Pseudophone
An experiment was conducted to examine the effect of the electronic pseudophone on sound localization in the front field of the lateral dimension.Measurements of sound localization were taken with or without head movements when the interaural axis of the pseudophone was oriented normal (nonreversal) or 180° reversed (reversal). The results obtained from five subjects showed that:(a) The pseudophone produced a right/left reversal of apparent audit…
Dual-Encoding Hypothesis in Short-Term Memory
2 experiments were conducted to demonstrate that the encoding in the shortterm memory system is 2 dimensional in nature. Experiment I was designed to retest Heyer and Barrett's hypothesis under the conditions of similar and dissimilar interpolated stimuli. The results of Experiment I indicated that the identity information was encoded both acoustically and pictorially and that the position information was encoded pictorially. Experiment II was de…
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Dual-Encoding Hypothesis in Short-Term Memory
2 experiments were conducted to demonstrate that the encoding in the shortterm memory system is 2 dimensional in nature. Experiment I was designed to retest Heyer and Barrett's hypothesis under the conditions of similar and dissimilar interpolated stimuli. The results of Experiment I indicated that the identity information was encoded both acoustically and pictorially and that the position information was encoded pictorially. Experiment II was de…
Effects of Head Movements on Sound Localization With an Electronic Pseudophone
An experiment was conducted to examine the effect of the electronic pseudophone on sound localization in the front field of the lateral dimension.Measurements of sound localization were taken with or without head movements when the interaural axis of the pseudophone was oriented normal (nonreversal) or 180° reversed (reversal). The results obtained from five subjects showed that:(a) The pseudophone produced a right/left reversal of apparent audit…
Effects of eye movements on the apparent depth of moving targets
Experiment I examined the difference limen (DL) for the direction of apparent rotation in depth of the moving target, in which two targets moving sinusoidally, in the fronto-parallel plane with phase difference were dichoptically presented to the eyes either fixating a stationary point or tracking the target. The results indicated that the discriminability to the change in depth for the moving target was reduced during tracking. Experiment II exa…
Magnitudes of disparity vergence responses at different convergence levels
An experiment was conducted with three subjects to examine the relation between the initial convergence level and disparity vergence. Magnitudes of vergence movements were measured by the photo-electric method when target stimuli with 2° or 4° retinal disparity were presented for various exposure durations (100-900 ms) to the eyes directed to an initial fixation stimulus located in the mid-sagittal plane with convergence angles of 3.1°, 6.2°, or …
Depth perception of stereokinetic cone and absolute distance information
Magnitudes of the apparent depth of eccentric circles and real cone stimuli were measured as a function of viewing distance when they were rotated on a circular disc and viewed monocularly. The diameters of the largest circle and base of the cone were 5, 10, 20, and 40 cm at the viewing distances, 0.5, 1, 2, and 4 m, respectively. The height of each cone was equal to the diameter of its base. The cones were tilted 15 deg from the fronto-parallel …
The Pulfrich effect and depth constancy
Perceived depth of the Pulfrich effect was measured as a function of viewing distance and target velocity. The stimulus was a vertical rod, moving sinusoidally back and forth along a horizontal path 22.5 cm long, within the observer's frontoparallel plane. The two independent variables were the viewing distance (1, 2, 3, and 4 m) and the target velocity (.2, .4, and .6 Hz). Observers viewed the stimulus binocularly through a neutral‐density filte…
Oculomotor responses of stereo‐anomalous observers to pulse and ramp disparities
We examined oculomotor responses to binocular disparities of one stereo‐normal and three stereo‐anomalous observers, who were identified through a stereoscopic depth‐discrimination task, in two experimental conditions. In the pulse disparity condition, crossed and uncrossed disparities (1–6°) were briefly presented (for .25–2.0 s). In the ramp disparity condition, disparities were varied continuously with constant velocities (.7–2.0°/s) and with …
Misconvergence to the stimulus plane causes apparent displacement of the stimulus elements seen monocularly 1
When one binocularly views a group of vertical lines through a ring, the outermost line segments (one on each side) seen within the ring are seen monocularly while the segments of the same lines outside the ring are seen binocularly. The monocular segments appear to be displaced outward with respect to the center of the ring and with respect to the corresponding binocular segments outside the ring. Three experiments examined the extent and direct…
New equally readable charts based on anisotropy of peripheral visual acuity 1
Anstis’ equally readable chart for visual acuity has been widely quoted in textbooks on visual perception. However, this chart does not reflect the anisotropy of peripheral visual acuity that has been reported by previous studies. Here, the authors reexamined peripheral visual acuity by measuring resolution thresholds for Landolt rings and recognition thresholds for hiragana letters as a function of retinal eccentricity across two principal retin…
Psychology (9 works) · Mathematics (7 works) · Physics (7 works) · Visual perception and processing mechanisms (7 works) · Optics (6 works) · Computer Science (5 works) · Stimulus (psychology) (5 works) · Artificial Intelligence (4 works) · Artificial Intelligence (4 works) · Communication (4 works)