Unconscious mental imagery

Nánay, Bence

doi:10.1098/rstb.2019.0689

Cited by 58 publications

(56 citation statements)

References 77 publications

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“…During hypnotic hallucination, these executive mechanisms of sense of agency and volition may be attenuated, thus explaining the experience of seeing a vivid face image that appeared by itself. In this light, hypnotic hallucination may be comparable to mental imagery in terms of their first-order representations whilst differing substantially in terms of their higher-order processes, including their conscious nature (Nanay, 2021).…”

Section: Discussionmentioning

confidence: 99%

Hypnotic visual hallucination induces greater lateralised brain activity than visual imagery

Lanfranco

2021

Preprint

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Hypnotic suggestions can produce a broad range of perceptual experiences, including hallucinations. Visual hypnotic hallucinations differ in many ways from regular mental images. For example, they are usually experienced as automatic, vivid, and real images, typically compromising the sense of reality. While both hypnotic hallucination and mental imagery are believed to mainly rely on the activation of the visual cortex via top-down mechanisms, it is unknown how they differ in the neural processes they engage. Here we used an adaptation paradigm to test and compare top-down processing between hypnotic hallucination, mental imagery, and visual perception in very highly hypnotisable individuals whose ability to hallucinate was assessed. By measuring the N170/VPP event-related complex and using multivariate decoding analysis, we found that hypnotic hallucination of faces involves greater top-down activation of sensory processing through lateralised mechanisms in the right hemisphere compared to mental imagery. Our findings suggest that the neural signatures that distinguish hypnotically hallucinated faces from imagined faces lie in the right brain hemisphere.

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Section: Discussionmentioning

confidence: 99%

Hypnotic visual hallucination induces greater lateralised brain activity than visual imagery

Lanfranco

2021

Preprint

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“…Similarly, offline perception can be conscious or unconscious. We know from a wide variety of experiments that online perception can be conscious or unconscious, so given that the only difference between online and offline perception is that of the presence or absence of corresponding sensory stimulation, we should expect that offline perception can also be conscious or unconscious [45]. Here, we get an interesting spread in different forms of offline perception.…”

Section: Varieties Of Offline Perceptionmentioning

confidence: 92%

“…Here, we get an interesting spread in different forms of offline perception. Mind-wandering, dreaming and hallucination are often taken to be necessarily conscious, but mental imagery can be unconscious and treating it as potentially unconscious has a lot of explanatory advantages [45,46].…”

Section: Varieties Of Offline Perceptionmentioning

confidence: 99%

“…However, the concept of mental imagery that emerges from neuroscience and psychology is the one according to which imagery is not necessarily conscious. In the third paper of the issue, Nanay [45] points out the theoretical and experimental advantages of treating mental imagery as not necessarily conscious-and this includes some of the imagery of at least some aphantasia subjects.…”

Section: The Topics Of the Theme Issuementioning

confidence: 99%

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Offline perception: an introduction

Fazekas

Nánay

Pearson³

2020

Phil. Trans. R. Soc. B

Self Cite

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Experiences that are self-generated and independent of sensory stimulations permeate our whole life. This theme issue examines their similarities and differences, systematizes the literature from an integrative perspective, critically discusses state-of-the-art empirical findings and proposes new theoretical approaches. The aim of the theme issue is to foster interaction between the different disciplines and research directions involved and to explore the prospects of a unificatory account of offline perception in general. This article is part of the theme issue ‘Offline perception: voluntary and spontaneous perceptual experiences without matching external stimulation’.

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“…Many questions of this interaction remain unclear, and it is largely unclear how the various manifestations of the conscious and unconscious relate to each other. The study of the ratio of verbal and nonverbal components of cognitive maps allow us to look deeper into the internal mental processes, to understand what conscious and unconscious mechanisms are involved in the implementation of thinking activity (Bottini and Doeller, 2020;Nanay, 2021).…”

Section: Introductionmentioning

confidence: 99%

The Ratio of Verbal and Nonverbal Components of Individual Cognitive Maps as a Reflection of the Collaborative Thinking Activity of Its Participants

Dautov

2021

IJCRSEE

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The presented results of the study allow us to determine the ratio of verbal and nonverbal components of thinking activity in solving problems of different types. The novelty of the research is in the use of individual cognitive maps made on the results of collaborative thinking activity in the study of possible combinations of symbolic (verbal) and figurative (nonverbal) components of internal thought processes implemented in different conditions. The study included two methodological blocks. The first of them is diagnostic. It consisted of four tasks (a verbal task with one solution, a verbal task with multiple solutions, a nonverbal task with one solution, a nonverbal task with multiple solutions), as well as a cognitive map based on the results of solving these tasks. The second block is mathematical and statistical, including the Kruskal-Wallis H-test, the Mann-Whitney U-test, and the Fried-man chi-square test. The study sample consisted of 80 students of the Don State Technical University. As a result of the study, it was found that cognitive maps created with time constraints significantly outperform cognitive maps created without such restrictions in terms of figurative, symbolic abstractness and symbolism. Cognitive maps created without time constraints significantly outperform cognitive maps created with time constraints in terms of imagery. In general, the predominance of the verbal or nonverbal components of thinking can vary significantly, but the general trend towards the predominant character of the imagery of thought processes remains.

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Unconscious mental imagery

Cited by 58 publications

References 77 publications

Hypnotic visual hallucination induces greater lateralised brain activity than visual imagery

Hypnotic visual hallucination induces greater lateralised brain activity than visual imagery

Offline perception: an introduction

The Ratio of Verbal and Nonverbal Components of Individual Cognitive Maps as a Reflection of the Collaborative Thinking Activity of Its Participants

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