scholarly journals Beyond imagination: Hypnotic visual hallucination induces greater lateralised brain activity than visual mental imagery

NeuroImage ◽  
2021 ◽  
pp. 118282
Author(s):  
Renzo C. Lanfranco ◽  
Álvaro Rivera-Rei ◽  
David Huepe ◽  
Agustín Ibáñez ◽  
Andrés Canales-Johnson
Keyword(s):  
Mental Imagery ◽  
Visual Hallucination ◽  
Brain Activity ◽  
Visual Mental Imagery

scholarly journals Neural Responses to Infant Emotions and Emotional Self-Awareness in Mothers and Fathers during Pregnancy

2020 ◽  
Vol 17 (9) ◽  
pp. 3314 ◽  
Author(s):  
Cristina Trentini ◽  
Marco Pagani ◽  
Marco Lauriola ◽  
Renata Tambelli
Keyword(s):  
Mental Imagery ◽  
Spatial Information ◽  
Brain Activity ◽  
Post Partum ◽  
High Order ◽  
Self Awareness ◽  
Neural Responses ◽  
Mothers And Fathers ◽  
Visual Mental Imagery ◽  
Affective Processes

Neuroscientific research has largely investigated the neurobiological correlates of maternal and (to a much lesser extent) paternal responsiveness in the post-partum period. In contrast, much less is known about the neural processing of infant emotions during pregnancy. Twenty mothers and 19 fathers were recruited independently during the third trimester of pregnancy. High-density electroencephalography (hdEEG) was recorded while expectant parents passively viewed images representing distressed, ambiguous, happy, and neutral faces of unknown infants. Correlational analyses were performed to detect a link between neural responses to infant facial expressions and emotional self-awareness. In response to infant emotions, mothers and fathers showed similar cerebral activity in regions involved in high-order socio-affective processes. Mothers and fathers also showed different brain activity in premotor regions implicated in high-order motor control, in occipital regions involved in visuo-spatial information processing and visual mental imagery, as well as in inferior parietal regions involved in attention allocation. Low emotional self-awareness negatively correlated with activity in parietal regions subserving empathy in mothers, while it positively correlated with activity in temporal and occipital areas implicated in mentalizing and visual mental imagery in fathers. This study may enlarge knowledge on the neural response to infant emotions during pregnancy.

scholarly journals Hypnotic visual hallucination induces greater lateralised brain activity than visual imagery

2021 ◽  
Author(s):  
Renzo C. Lanfranco ◽  
Álvaro Rivera-Rei ◽  
David Huepe ◽  
Agustín Ibáñez ◽  
Andrés Canales-Johnson
Keyword(s):  
Mental Imagery ◽  
Sensory Processing ◽  
Visual Imagery ◽  
Visual Hallucination ◽  
Right Hemisphere ◽  
Brain Activity ◽  
Top Down ◽  
Neural Processes ◽  
Sense Of Reality ◽  
The Right

AbstractHypnotic 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.

scholarly journals Mental Rotation Meets the Motion Aftereffect: The Role of hV5/MT+ in Visual Mental Imagery

2011 ◽  
Vol 23 (6) ◽  
pp. 1395-1404 ◽  
Author(s):  
Ruth Seurinck ◽  
Floris P. de Lange ◽  
Erik Achten ◽  
Guy Vingerhoets
Keyword(s):  
Mental Rotation ◽  
Mental Imagery ◽  
Parietal Cortex ◽  
Neural Activity ◽  
Posterior Parietal Cortex ◽  
Visual Motion ◽  
Motion Aftereffect ◽  
Mental Rotation Task ◽  
Behavioral Performance ◽  
Visual Mental Imagery

A growing number of studies show that visual mental imagery recruits the same brain areas as visual perception. Although the necessity of hV5/MT+ for motion perception has been revealed by means of TMS, its relevance for motion imagery remains unclear. We induced a direction-selective adaptation in hV5/MT+ by means of an MAE while subjects performed a mental rotation task that elicits imagined motion. We concurrently measured behavioral performance and neural activity with fMRI, enabling us to directly assess the effect of a perturbation of hV5/MT+ on other cortical areas involved in the mental rotation task. The activity in hV5/MT+ increased as more mental rotation was required, and the perturbation of hV5/MT+ affected behavioral performance as well as the neural activity in this area. Moreover, several regions in the posterior parietal cortex were also affected by this perturbation. Our results show that hV5/MT+ is required for imagined visual motion and engages in an interaction with parietal cortex during this cognitive process.

Pattern of brain activity during mental imagery of eye movements

NeuroImage ◽  
2001 ◽  
Vol 13 (6) ◽  
pp. 1219
Author(s):  
F. Lui ◽  
P. Baraldi ◽  
F. Benuzzi ◽  
S. Fonda ◽  
M. Maieron ◽  
...  
Keyword(s):  
Eye Movements ◽  
Mental Imagery ◽  
Brain Activity

Failures to Imagine

2016 ◽  
Vol 36 (3) ◽  
pp. 270-300 ◽  
Author(s):  
Reed Maxwell ◽  
Steven Jay Lynn ◽  
Scott Lilienfeld
Keyword(s):  
Borderline Personality Disorder ◽  
Personality Disorder ◽  
Mental Imagery ◽  
Emotional Regulation ◽  
Preliminary Evidence ◽  
Borderline Personality ◽  
Self Report ◽  
Future Research ◽  
Cross Sectional ◽  
Visual Mental Imagery

Although interest in the relationship between mental imagery and psychopathology has increased greatly over the last decade, few publications to date have examined relationships between personality-related psychopathology and mental imagery use, abilities, or both. However, we have reason to expect that substantive relationships may exist. For example, studies have consistently linked psychopathy and borderline personality disorder to problems in emotion experience and emotion regulation, and a growing number of studies indicate that deficits in visual mental imagery use and ability in particular may contribute to such problems. Using correlational data from multiple self-report measures of normal and pathological personality functioning and visual mental imagery, our study presents preliminary evidence for lower levels of self-reported visual mental imagery use, abilities, or both among noncriminal individuals with higher levels of self-reported psychopathy and individuals with greater emotional regulation difficulties, a core feature of borderline personality disorder. We also found significant relationships among self-reported visual mental imagery use, ability, or both, and personality variables shown to strongly predict psychopathy and emotional regulation difficulties. Limitations of the study, especially its reliance on a correlational, cross-sectional design, are discussed, and implications for future research are explored.

Decoding stimulus identity in occipital, parietal and inferotemporal cortices during visual mental imagery

Cortex ◽  
2020 ◽  
Vol 127 ◽  
pp. 371-387 ◽  
Author(s):  
Flavio Ragni ◽  
Raffaele Tucciarelli ◽  
Patrik Andersson ◽  
Angelika Lingnau
Keyword(s):  
Mental Imagery ◽  
Visual Mental Imagery ◽  
Stimulus Identity

scholarly journals The Use of Visual Mental Imagery in New Product Design

1999 ◽  
Vol 36 (1) ◽  
pp. 18 ◽  
Author(s):  
Darren W. Dahl ◽  
Amitava Chattopadhyay ◽  
Gerald J. Gorn
Keyword(s):  
Product Design ◽  
Mental Imagery ◽  
New Product ◽  
Visual Mental Imagery ◽  
New Product Design

Modulation of Spatial Orientation Processing by Mental Imagery Instructions: A MEG Study of Representational Momentum

2000 ◽  
Vol 12 (4) ◽  
pp. 569-582 ◽  
Author(s):  
Michel-Ange Amorim ◽  
Wilfried Lang ◽  
Gerald Lindinger ◽  
Dagmar Mayer ◽  
Lüder Deecke ◽  
...  
Keyword(s):  
Mental Imagery ◽  
Spatial Orientation ◽  
Visual Motion ◽  
Brain Activity ◽  
Representational Momentum ◽  
The Body ◽  
Body Motion ◽  
Body Tilt ◽  
Rotational Equilibrium ◽  
The Right

Under appropriate conditions, an observer's memory for the final position of an abruptly halted moving object is distorted in the direction of the represented motion. This phenomenon is called “representational momentum” (RM). We examined the effect of mental imagery instructions on the modulation of spatial orientation processing by testing for RM under conditions of picture versus body rotation perception and imagination. Behavioral data were gathered via classical reaction time and error measurements, whereas brain activity was recorded with the help of magnetoence-phalography (MEG). Due to the so-called inverse problem and to signal complexity, results were described at the signal level rather than with the source location modeling. Brain magnetic field strength and spatial distribution, as well as latency of P200m evoked fields were used as neurocognitive markers. A task was devised where a subject examined a rotating sea horizon as seen from a virtual boat in order to extrapolate either the picture motion or the body motion relative to the picture while the latter disappeared temporarily until a test-view was displayed as a final orientation candidate. Results suggest that perceptual interpretation and extrapolation of visual motion in the roll plane capitalize on the fronto-parietal cortical networks involving working memory processes. Extrapolation of the rotational dynamics of sea horizon revealed a RM effect simulating the role of gravity in rotational equilibrium. Modulation of the P200m component reflected spatial orientation processing and a non-voluntary detection of an incongruity between displayed and expected final orientations given the implied motion. Neuromagnetic properties of anticipatory (Contingent Magnetic Variation) and evoked (P200m) brain magnetic fields suggest, respectively, differential allocation of attentional resources by mental imagery instructions (picture vs. body tilt), and a communality of neural structures (in the right centro-parietal region) for the control of both RM and mental rotation processes. Finally, the RM of the body motion is less prone to forward shifts than that of picture motion evidencing an internalization of the implied mass of the virtual body of the observer.

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