Dose-dependent impact of vaporized cannabis on the neural correlates of monitoring of action errors and divergent thinking in regular cannabis users

2017 ◽  
Vol 381 ◽  
pp. 614
Author(s):  
M. Kowal ◽  
H. van Steenbergen ◽  
L. Colzato ◽  
A. Hazekamp ◽  
N. van der Wee ◽  
...  
Keyword(s):  
Divergent Thinking ◽  
Neural Correlates ◽  
Dose Dependent ◽  
Action Errors

scholarly journals The relationship between methods of scoring the alternate uses task and the neural correlates of divergent thinking: Evidence from voxel-based morphometry

NeuroImage ◽  
2020 ◽  
Vol 223 ◽  
pp. 117325 ◽  
Author(s):  
Oshin Vartanian ◽  
Ingrid Smith ◽  
Timothy K. Lam ◽  
Kristen King ◽  
Quan Lam ◽  
...  
Keyword(s):  
Divergent Thinking ◽  
Neural Correlates ◽  
Voxel Based Morphometry ◽  
The Relationship

Neural correlates of serial order effect in verbal divergent thinking

2017 ◽  
Vol 99 ◽  
pp. 92-100 ◽  
Author(s):  
Meijuan Wang ◽  
Ning Hao ◽  
Yixuan Ku ◽  
Roland H. Grabner ◽  
Andreas Fink
Keyword(s):  
Divergent Thinking ◽  
Serial Order ◽  
Order Effect ◽  
Neural Correlates

Dose-dependent effects of cannabis on the neural correlates of error monitoring in frequent cannabis users

2015 ◽  
Vol 25 (11) ◽  
pp. 1943-1953 ◽  
Author(s):  
Mikael A. Kowal ◽  
Henk van Steenbergen ◽  
Lorenza S. Colzato ◽  
Arno Hazekamp ◽  
Nic J.A. van der Wee ◽  
...  
Keyword(s):  
Neural Correlates ◽  
Error Monitoring ◽  
Dose Dependent

Enhancement of Spontaneous and Heat-Evoked Activity in Spinal Nociceptive Neurons by the Endovanilloid/Endocannabinoid N-Arachidonoyldopamine (NADA)

2006 ◽  
Vol 95 (2) ◽  
pp. 1207-1212 ◽  
Author(s):  
Susan M. Huang ◽  
J. Michael Walker
Keyword(s):  
Thermal Hyperalgesia ◽  
Neural Correlates ◽  
Spontaneous Discharge ◽  
Nociceptive Neurons ◽  
Cb1 Antagonist ◽  
Trpv1 Antagonist ◽  
Evoked Activity ◽  
Dose Dependent ◽  
Thermal Stimuli

N-arachidonoyldopamine (NADA) is an endogenous molecule found in the nervous system that is capable of acting as a vanilloid agonist via the TRPV1 receptor and as a cannabinoid agonist via the CB1 receptor. Using anesthetized rats, we investigated the neural correlates of behavioral thermal hyperalgesia produced by NADA. Extracellular single cell electrophysiology was conducted to assess the effects of peripheral administration of NADA (i.pl.) on nociceptive neurons in the dorsal horn of the spinal cord. Injection of NADA in the hindpaw caused increased spontaneous discharge of spinal nociceptive neurons compared with injection of vehicle. The neurons also displayed magnified responses to application of thermal stimuli ranging from 34 to 52°C. NADA-induced neural hypersensitivity was dose dependent (EC50 = 1.55 μg) and TRPV1 dependent, as the effect was abolished by co-administration of the TRPV1 antagonist 5′-iodoresiniferatoxin (I-RTX). In contrast, co-administration of the CB1 antagonist SR 141716A did not attenuate this effect. These results suggest that the enhanced responses of spinal nociceptive neurons likely underlie the behavioral thermal hyperalgesia and implicate a possible pain-sensitizing role of endogenous NADA mediated by TRPV1 in the periphery.

Variations Across the Menstrual Cycle in EEG Activity During Thinking and Mental Relaxation

1999 ◽  
Vol 13 (3) ◽  
pp. 163-172 ◽  
Author(s):  
R. Krug ◽  
M. Mölle ◽  
H.L. Fehm ◽  
J. Born
Keyword(s):  
Menstrual Cycle ◽  
Divergent Thinking ◽  
Spectral Power ◽  
Plasma Concentrations ◽  
Task Demands ◽  
Menstrual Phase ◽  
Convergent Thinking ◽  
Eeg Activity ◽  
Dimensional Complexity ◽  
Mental Relaxation

Abstract Previous studies have indicated: (1) peak performance on tests of divergent creative thinking during the ovulatory phase of the menstrual cycle; (2) compared to convergent analytical thinking, divergent thinking was found to be associated with a distinctly increased dimensional complexity of ongoing EEG activity. Based on these findings, we hypothesized that cortical information processing during the ovulatory phase is characterized by an increased EEG dimensionality. Each of 16 women was tested on 3 occasions: during the ovulatory phase, the luteal phase, and menses. Presence of the phases was confirmed by determination of plasma concentrations of estradiol, progesterone, and luteinizing hormone. The EEG was recorded while the women performed: (1) tasks of divergent thinking; (2) tasks of convergent thinking; and (3) during mental relaxation. In addition to EEG dimensional complexity, conventional spectral power analysis was performed. Behavioral data confirmed enhanced creative performance during the ovulatory phase while convergent thinking did not vary across cycle phases. EEG complexity was higher during divergent than convergent thought, but this difference remained unaffected by the menstrual phase. Influences of the menstrual phase on EEG activity were most obvious during mental relaxation. In this condition, women during the ovulatory phase displayed highest EEG dimensionality as compared with the other cycle phases, with this effect being most prominent over the central and parietal cortex. Concurrently, power within the alpha frequency band as well as theta power at frontal and parietal leads were lower during the luteal than ovulatory phase. EEG results indicate that task demands of thinking overrode effects of menstrual cycle. However, with a less demanding situation, an ovulatory increase in EEG dimensionality became prominent suggesting a loosening of associative habits during this phase.

Measurement Invariance of Divergent Thinking Across Gender, Age, and School Forms

2009 ◽  
Vol 25 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Jörg-Tobias Kuhn ◽  
Heinz Holling
Keyword(s):  
Measurement Invariance ◽  
Divergent Thinking ◽  
Factor Model ◽  
Age Groups ◽  
Thinking Skills ◽  
Specific Model ◽  
Confirmatory Factor Analyses ◽  
Domain Specific ◽  
Gender And Age ◽  
Confirmatory Factor

The present study explores the factorial structure and the degree of measurement invariance of 12 divergent thinking tests. In a large sample of German students (N = 1328), a three-factor model representing verbal, figural, and numerical divergent thinking was supported. Multigroup confirmatory factor analyses revealed that partial strong measurement invariance was tenable across gender and age groups as well as school forms. Latent mean comparisons resulted in significantly higher divergent thinking skills for females and students in schools with higher mean IQ. Older students exhibited higher latent means on the verbal and figural factor, but not on the numerical factor. These results suggest that a domain-specific model of divergent thinking may be assumed, although further research is needed to elucidate the sources that negatively affect measurement invariance.

Dreamlike and Playful Virtual Environments to Inspire Children’s Divergent Thinking

2020 ◽  
pp. 1-11
Author(s):  
Jérôme Guegan ◽  
Claire Brechet ◽  
Julien Nelson
Keyword(s):  
Virtual Environments ◽  
Divergent Thinking ◽  
Idea Generation ◽  
Combined Processes ◽  
Office Environment ◽  
School Aged Children

Abstract. Computers have long been seen as possible tools to foster creativity in children. In this respect, virtual environments present an interesting potential to support idea generation but also to steer it in relevant directions. A total of 96 school-aged children completed a standard divergent thinking task while being exposed to one of three virtual environments: a replica of the headmistress’s office, a replica of their schoolyard, and a dreamlike environment. Results showed that participants produced more original ideas in the dreamlike and playful environments than in the headmistress’s office environment. Additionally, the contents of the environment influenced the selective exploration of idea categories. We discuss these results in terms of two combined processes: explicit references to sources of inspiration in the environment, and the implicit priming of specific idea categories.

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