Affective priming of emotional pictures in parafoveal vision: Left visual field advantage

It has been suggested that the hypnotic state results in a greater relative activation or priming of the right cerebral hemisphere than of the left hemisphere. The experiment reported here employed hypnosis to produce such a priming effect in a visual-detection task. Subjects were required to detect the presence or absence of a gap in outline squares presented either to the left visual field or right visual field, with response time as the primary dependent measure. Those subjects who were hypnotized produced a 50-msec. response time difference favoring squares presented to the left visual field whereas control subjects and simulator-control subjects showed no lateral asymmetries. The result is classified as a material-nonspecific priming effect and discussed with regard to the nature of processing resources.

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Shift Toward Left Visual Field Advantage After Short-Term Learning Experience

International Journal of Neuroscience ◽

10.3109/00207459008985957 ◽

1990 ◽

Vol 55 (2-4) ◽

pp. 113-117 ◽

Cited By ~ 3

Author(s):

Kazuhito Yoshizaki

Keyword(s):

Visual Field ◽

Left Visual Field ◽

Learning Experience ◽

Short Term

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Low-frequency electroencephalogram oscillations govern left-eye lateralization during anti-predatory responses in the music frog

Journal of Experimental Biology ◽

10.1242/jeb.232637 ◽

2020 ◽

Vol 223 (21) ◽

pp. jeb232637

Author(s):

Jiangyan Shen ◽

Ke Fang ◽

Ping Liu ◽

Yanzhu Fan ◽

Jing Yang ◽

...

Keyword(s):

Visual Field ◽

Left Visual Field ◽

Right Hemisphere ◽

Brain Area ◽

Power Spectra ◽

Low Frequency ◽

The Right ◽

Electroencephalogram Eeg ◽

The Brain ◽

Steady Velocity

ABSTRACTVisual lateralization is widespread for prey and anti-predation in numerous taxa. However, it is still unknown how the brain governs this asymmetry. In this study, we conducted behavioral and electrophysiological experiments to evaluate anti-predatory behaviors and dynamic brain activities in Emei music frogs (Nidirana daunchina), to explore the potential eye bias for anti-predation and the underlying neural mechanisms. To do this, predator stimuli (a model snake head and a leaf as a control) were moved around the subjects in clockwise and anti-clockwise directions at steady velocity. We counted the number of anti-predatory responses and measured electroencephalogram (EEG) power spectra for each band and brain area (telencephalon, diencephalon and mesencephalon). Our results showed that (1) no significant eye preferences could be found for the control (leaf); however, the laterality index was significantly lower than zero when the predator stimulus was moved anti-clockwise, suggesting that left-eye advantage exists in this species for anti-predation; (2) compared with no stimulus in the visual field, the power spectra of delta and alpha bands were significantly greater when the predator stimulus was moved into the left visual field anti-clockwise; and, (3) generally, the power spectra of each band in the right-hemisphere for the left visual field were higher than those in the left counterpart. These results support that the left eye mediates the monitoring of a predator in music frogs and lower-frequency EEG oscillations govern this visual lateralization.

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Visual Masking, Handedness, and Laterality

Perceptual and Motor Skills ◽

10.2466/pms.1974.38.3.803 ◽

1974 ◽

Vol 38 (3) ◽

pp. 803-811 ◽

Cited By ~ 2

Author(s):

S. M. Luria

Keyword(s):

Visual Field ◽

Left Visual Field ◽

Visual Masking ◽

Right Visual Field ◽

Black Disk ◽

Left Handed ◽

Masking Stimulus ◽

The Right

Monocular thresholds for a black disk and for single letters, presented either alone or followed by a masking stimulus, were obtained for both eyes of 16 left-handed Ss and 16 right-handed Ss. Thresholds for the disk tended to be lower when it was presented to the right visual field, particularly for the left eye and for right-handers. Thresholds for the letters tended to be lower when presented to the right visual field of right-handers and to the left visual field of left-handers. The masking stimulus enhanced these differences for the disk but not for the letters.

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Lateral Word Recognition: Effects of Unilateral and Bilateral Presentation, Asynchrony of Bilateral Presentation, and Forced Order of Report

Quarterly Journal of Experimental Psychology ◽

10.1080/14640747108400252 ◽

1971 ◽

Vol 23 (4) ◽

pp. 410-416 ◽

Cited By ~ 53

Author(s):

Walter F. McKeever

Keyword(s):

Visual Field ◽

Word Recognition ◽

Left Visual Field ◽

Right Visual Field ◽

Bilateral Presentation

This experiment enquired: (1) whether right visual field (RVF) recognition superiority was greater in bilateral than in unilateral word presentation; (2) whether left field-favouring attentional or recall sets could be induced by presenting left visual field (LVF) words 20 msec prior to RVF words or by instructions to report LVF words prior to RVF words. Results showed: (1) all conditions studied yielded significant RVF superiority; (2) RVF superiority magnitude was significantly greater in bilateral than in unilateral presentation, suggesting the tenability of hypotheses that different mechanisms operate in these conditions; (3) neither earlier delivery nor earlier report of LVF words altered the pattern of RVF superiority in bilateral presentation, the later result demonstrating that differential receptive organization rather than differential recall of the two stimuli is responsible for RVF superiority in bilateral presentation.

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