Cerebral mechanisms of hypnotic hypoesthesia. An ERP investigation on the expectancy stage of perception

2020 ◽  
Vol 57 (11) ◽  
Author(s):  
Rinaldo Livio Perri ◽  
Enrico Facco ◽  
Federico Quinzi ◽  
Valentina Bianco ◽  
Marika Berchicci ◽  
...  
Keyword(s):  
Cerebral Mechanisms

Cerebral Mechanisms in Obsessive-Compulsive Disorder

CNS Spectrums ◽  
1998 ◽  
Vol 3 (7) ◽  
pp. 44-46
Author(s):  
Juan Carlos Goldar ◽  
Dario Rojas ◽  
Mariano Outes
Keyword(s):  
Obsessive Compulsive Disorder ◽  
Brain Lesion ◽  
Brain Lesions ◽  
Cingulate Gyrus ◽  
Cerebral Function ◽  
Obsessive Compulsive ◽  
Compulsive Disorder ◽  
Level Change ◽  
Clinical Level ◽  
Cerebral Mechanisms

AbstractBrain lesions cause different level change in cerebral function. They may conflict with the existing antagonistic mechanisms between the dorsal and ventral brain. At a clinical level, a dorsal brain lesion may constitute praxis disorders, while a ventral lesion may represent preventive inhibition. Further instinctive symptoms originate in the cingulate gyrus and its connections with the thalamic peduncle. This area may be an importan obsessive-compulsive disorder (OCD) pathway, that is utilized therapeutically during neurosurgical interventions in OCD.

scholarly journals Effects of Positive and Negative Expectations on Human Pain Perception Engage Separate But Interrelated and Dependently Regulated Cerebral Mechanisms

2018 ◽  
Vol 39 (7) ◽  
pp. 1261-1274 ◽  
Author(s):  
Yao-Wei Shih ◽  
Hsin-Yun Tsai ◽  
Feng-Sheng Lin ◽  
Yi-Hsuan Lin ◽  
Chun-Yen Chiang ◽  
...  
Keyword(s):  
Pain Perception ◽  
Negative Expectations ◽  
Cerebral Mechanisms

Cerebral mechanisms of prosodic integration: evidence from connected speech

NeuroImage ◽  
2005 ◽  
Vol 24 (4) ◽  
pp. 937-947 ◽  
Author(s):  
Isabelle Hesling ◽  
Sylvain Clément ◽  
Martine Bordessoules ◽  
Michèle Allard
Keyword(s):  
Connected Speech ◽  
Cerebral Mechanisms

The cerebral representation of scratching-induced pleasantness

2014 ◽  
Vol 111 (3) ◽  
pp. 488-498 ◽  
Author(s):  
Hideki Mochizuki ◽  
Satoshi Tanaka ◽  
Tomoyo Morita ◽  
Toshiaki Wasaka ◽  
Norihiro Sadato ◽  
...  
Keyword(s):  
Supplementary Motor Area ◽  
Premotor Cortex ◽  
Imaging Study ◽  
Insular Cortex ◽  
Reward System ◽  
Magnetic Resonance Imaging Study ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Significant Activation ◽  
Cerebral Mechanisms

Itch is an unpleasant sensation with the desire to scratch. Although it is well known that scratching itchy skin is pleasurable, the cerebral mechanisms underlying this phenomenon are poorly understood. We hypothesized that the reward system is associated with scratching-induced pleasantness. To investigate this hypothesis, a functional magnetic resonance imaging study was performed in 16 healthy subjects. Pleasantness was evoked by scratching the wrists where itch stimuli were applied, while scratching the dorsal forearms, far from itch stimuli, did not evoke pleasantness. Interestingly, pleasantness evoked by scratching activated not only the reward system (i.e., the striatum and midbrain) but also key regions of perception (i.e., the primary somatosensory cortex) and awareness of subjective feelings (i.e., the insular cortex), indicating that a broad network is involved in scratching-induced pleasantness. Moreover, although itch was suppressed by scratching, motor-related regions such as the supplementary motor area, premotor cortex, and cerebellum showed significant activation when pleasantness was evoked. This activation could explain why scratching-induced pleasantness potentially reinforces scratching behaviors. This study is the first to identify networks activated by scratching-induced pleasantness. The results of the present study provide important information on the cerebral mechanisms underlying why scratching itchy skin evokes pleasurable feelings that reinforce scratching behaviors.

Cerebral mechanisms of experimental hyperalgesia in fibromyalgia

2011 ◽  
Vol 16 (5) ◽  
pp. 636-647 ◽  
Author(s):  
M. Burgmer ◽  
B. Pfleiderer ◽  
C. Maihöfner ◽  
M. Gaubitz ◽  
E. Wessolleck ◽  
...  
Keyword(s):  
Cerebral Mechanisms
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