An Improved Electronic Tachistoscope

Merryman, John G.; Allen, Howard E.

doi:10.2307/1417975

Cited by 5 publications

(3 citation statements)

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“…Procedure.-The stimuli were presented in a modified Dodge-type tachistoscope (Merryman & Allen, 1953) with a preadapting field of slightly less luminance than the stimulus field and with both fields 34 in. from 5's eyes.…”

Section: Methodsmentioning

confidence: 99%

Effects of dimensional redundancy on visual discrimination.

Gr¹

1966

Journal of Experimental Psychology

218

124

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Absolute judgments of line lengths and line positions, under easy and difficult viewing conditions, were obtained when the stimulus dimensions were varied separately, together and perfectly correlated, and together and uncorrelated. Results showed that a redundancy gain is obtained-performance is better-from correlated dimensions and that this gain is independent of sensory limitation. Analyses suggest that redundancy gains are obtainable only when stimulus dimensions are integral and that dimensions may also have to be continuous. An empirical method of measuring the amount of integrality of stimulus dimensions is suggested.

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Section: Methodsmentioning

confidence: 99%

Effects of dimensional redundancy on visual discrimination.

Gr¹

1966

Journal of Experimental Psychology

218

124

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“…114 Authenticity also matters because fakes may be used to defraud consumers and may result in a wasteful allocation of scarce museum resources. 115 Moral rights promote authenticity in several ways.The right of attribution markets an author's works by identifying their provenance and prevents misattribution of inferior works to successful authors thereby reducing consumer search costs. 116 Correct attribution of copyright works may also substantially a¡ect the price commanded by copyright works.…”

Section: Authenticitymentioning

confidence: 99%

The Trouble with Moral Rights

Masiyakurima

2005

Modern Law Review

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It is usually argued that moral rights are severely handicapped by their inconsistent entrenchment in common law and civilian legal systems. This article argues that the main trouble with moral rights protection is that the justifications for the existence of these rights are riddled with internal inconsistencies generated by the vagaries of copyright exploitation. Harmonising moral rights protection or using moral rights justifications cumulatively may not resolve the theoretical inconsistencies. Copyright protection must therefore be seriously overhauled if moral rights are to be widely perceived as vehicles for protecting authors' rights.

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“…One way to prevent the possible contamination of target-evoked brain responses by irrelevant stimuli is the presentation of the target at very short exposure. Such presentations have previously been achieved with electrical and mechanical tachistoscopes, which enables presentations of visual stimuli briefly enough to preclude conscious perception and recognition [e.g., Griffing, 1896;Karlin, 1955;Kunstwilson and Zajonc, 1980;Lancaste, et al, 1971;Merryman and Allen, 1953;Shevrin and Fritzler, 1968].…”

Section: Introductionmentioning

confidence: 99%

Submillisecond unmasked subliminal visual stimuli evoke electrical brain responses

Sperdin

Spierer

Becker

et al. 2014

Human Brain Mapping

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Subliminal perception is strongly associated to the processing of meaningful or emotional information and has mostly been studied using visual masking. In this study, we used high density 256-channel EEG coupled with an liquid crystal display (LCD) tachistoscope to characterize the spatiotemporal dynamics of the brain response to visual checkerboard stimuli (Experiment 1) or blank stimuli (Experiment 2) presented without a mask for 1 ms (visible), 500 ms (partially visible), and 250 ms (subliminal) by applying time-wise, assumption-free nonparametric randomization statistics on the strength and on the topography of high-density scalp-recorded electric field. Stimulus visibility was assessed in a third separate behavioral experiment. Results revealed that unmasked checkerboards presented subliminally for 250 ms evoked weak but detectable visual evoked potential (VEP) responses. When the checkerboards were replaced by blank stimuli, there was no evidence for the presence of an evoked response anymore. Furthermore, the checkerboard VEPs were modulated topographically between 243 and 296 ms poststimulus onset as a function of stimulus duration, indicative of the engagement of distinct configuration of active brain networks. A distributed electrical source analysis localized this modulation within the right superior parietal lobule near the precuneus. These results show the presence of a brain response to submillisecond unmasked subliminal visual stimuli independently of their emotional saliency or meaningfulness and opens an avenue for new investigations of subliminal stimulation without using visual masking.

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An Improved Electronic Tachistoscope

Cited by 5 publications

References 0 publications

Effects of dimensional redundancy on visual discrimination.

Effects of dimensional redundancy on visual discrimination.

The Trouble with Moral Rights

Submillisecond unmasked subliminal visual stimuli evoke electrical brain responses

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