• Issue

    Brain and Behavior: Volume 10, Issue 11

    November 2020

ISSUE INFORMATION

Open Access

Issue Information

  • First Published: 15 November 2020

ORIGINAL RESEARCH

Open Access

Dihydrotestosterone in Amyotrophic lateral sclerosis—The missing link?

  • First Published: 13 October 2020
Dihydrotestosterone in Amyotrophic lateral sclerosis—The missing link?

CSF levels of dihydrotestosterone were measured in 13 ALS patients [7 males and 6 females] and in 22 controls [12 males and 10 females], and we found that CSF dihydrotestosterone levels were significantly decreased in all the male and female ALS patients dihydrotestosterone probably plays a key role in ALS pathogenesis.

Open Access

Brain reactions to the use of sensorized hand prosthesis in amputees

  • First Published: 19 September 2020
Brain reactions to the use of sensorized hand prosthesis in amputees

Recent technological advancements have allowed for a bidirectional connection of the prosthetic hand via intraneural electrodes in stump nerve trunks. No reports are available so far on modifications in brain function accompanying the use of a bidirectional hand prosthesis. We performed a multimodal neurophysiological and neuroimaging evaluation of brain functional changes occurring during training with a bidirectional hand prosthesis in five consecutive patients, and demonstrating brain functional changes related to the use of the prosthetic hand.

Open Access

Vitamin D supplementation improves anxiety but not depression symptoms in patients with vitamin D deficiency

  • First Published: 18 September 2020
Vitamin D supplementation improves anxiety but not depression symptoms in patients with vitamin D deficiency

Vitamin D (VD) supplementation could improve the anxiety symptoms but not depressive symptoms in depressive patients with low VD level after the 6-month intervention.

Open Access

Pathways to post-traumatic stress disorder and alcohol dependence: Trauma, executive functioning, and family history of alcoholism in adolescents and young adults

  • First Published: 29 September 2020
Pathways to post-traumatic stress disorder and alcohol dependence: Trauma, executive functioning, and family history of alcoholism in adolescents and young adults

Findings from this study demonstrate associations with PTSD and alcohol dependence symptom counts, as well as poor problem-solving ability in trauma-exposed individuals from families densely affected with alcohol dependence, depending on trauma type, FH density of alcoholism, and sex. This suggests that having a FH of alcohol dependence and exposure to trauma during adolescence may be associated with more PTSD and alcohol dependence symptoms, and poor problem-solving abilities in adulthood.

Open Access

Clock-drawing test: Normative data of three quantitative scoring methods for Chinese-speaking adults in Shijiazhuang City and clinical utility in patients with acute ischemic stroke

  • First Published: 27 August 2020
Clock-drawing test: Normative data of three quantitative scoring methods for Chinese-speaking adults in Shijiazhuang City and clinical utility in patients with acute ischemic stroke

Age and education level were the key factors that affected the CDT scores. Normative data stratified for age and years of education were established. CDT total scores and subscores provided good discriminant validity for patients with acute ischemic stroke.

ORIGINAL RESEARCH

Open Access

The diagnostic potential of multimodal neuroimaging measures in Parkinson's disease and atypical parkinsonism

  • First Published: 07 October 2020
The diagnostic potential of multimodal neuroimaging measures in Parkinson's disease and atypical parkinsonism

The addition of functional measures (ReHo and DegCen) to the structural measure (Vol) generally yielded statistically significant improvements to classification accuracy, compared to the use of the structural measure alone, across different problems of distinguishing between healthy controls (HC) and each diagnostic type of parkinsonism (PD, MSA, and PSP) and between different diagnostic types of parkinsonism.

Open Access

Propofol inhibits the expression of Abelson nonreceptor tyrosine kinase without affecting learning or memory function in neonatal rats

  • First Published: 01 September 2020
Propofol inhibits the expression of Abelson nonreceptor tyrosine kinase without affecting learning or memory function in neonatal rats

Propofol multiple anesthesia may affect the learning and memory abilities of infants and young children. c-Abl plays an important role in neurodegenerative diseases. Propofol multiple anesthesia has no effect on learning and memory function by inhibiting the expression of c-Abl.

Open Access

Variability in body weight precedes diagnosis in dementia: A nationwide cohort study

  • First Published: 28 August 2020
Variability in body weight precedes diagnosis in dementia: A nationwide cohort study

Body weight variability could be a potential risk factor for Alzheimer's disease and vascular dementia, which may provide new insights for dementia prevention.

Open Access

Neurogenic dysphagia in traditional Chinese medicine

  • First Published: 18 September 2020
Neurogenic dysphagia in traditional Chinese medicine

The concept of neurogenic dysphagia was first described as Hou Bi in the Yellow Emperor's Internal Classic, which is the first Chinese medical classic and origin of traditional Chinese medicine (TCM) theory. In different eras, the pathogenesis of neurogenic dysphagia was explained by three theories in TCM including wind-phlegm blocking collaterals, deficiency of liver and kidney-essence, and Qi-stagnation with static blood. In addition to the TCM prescriptions, acupuncture is characteristic and seems to be effective. However, the evidences of efficacy and safety from clinical trials are required.

Open Access

Using machine-learning approach to distinguish patients with methamphetamine dependence from healthy subjects in a virtual reality environment

  • First Published: 29 August 2020
Using machine-learning approach to distinguish patients with methamphetamine dependence from healthy subjects in a virtual reality environment

The study shows the potential of using machine learning to distinguish drug-addicted patients from healthy subjects by using surface EEG and galvanic skin response data. The random forest algorithm shows the best performance comparing with support vector machine and logistic regression.

Open Access

Behavioral changes and gene profile alterations after chronic 1,950-MHz radiofrequency exposure: An observation in C57BL/6 mice

  • First Published: 28 August 2020
Behavioral changes and gene profile alterations after chronic 1,950-MHz radiofrequency exposure: An observation in C57BL/6 mice

Young- and middle-aged C57BL/6 mice, aged 2 and 12 months, were exposed to 1,950-MHz RF-EMF at an absorption rate of 5.0 W/kg for 2 hr/day and 5 days/week for 8 months. We found an association between chronic RF-EMF exposure-induced behavioral improvement and hippocampal gene signature in middle-aged mice.

Open Access

Development of a Thai tool for assessing behavioral and psychological symptoms of dementia: A confirmatory factor analysis

  • First Published: 28 August 2020
Development of a Thai tool for assessing behavioral and psychological symptoms of dementia: A confirmatory factor analysis

Confirmatory factor analysis showed the goodness of fit of 5 clusters of BPSD-T included a psychomotor syndrome (aggression, irritability, delusions, insomnia), an affective syndrome (apathy, repeating, anxiety, depression), a psychosis syndrome (misidentification, hallucinations), a behavior syndrome (hoarding, rummaging, wandering), and a euphoria syndrome (euphoria).

Open Access

Prevalence and risk factors of mental distress in China during the outbreak of COVID-19: A national cross-sectional survey

  • First Published: 01 September 2020
Prevalence and risk factors of mental distress in China during the outbreak of COVID-19: A national cross-sectional survey

In national cross-sectional survey with largest participants in china, we pose serious challenges related to the high prevalence of psychological distress, find out major risk factors for them, and then offer evidence-based strategies to deal with the mental health problems caused by the COVID-19 pandemic. Our research also provides evidences for other countries suffering from the COVID-19 to take public health interventions to relieve the public psychological pressure.

Open Access

Epidemiology of Myasthenia Gravis in Sweden 2006–2016

  • First Published: 01 September 2020
Epidemiology of Myasthenia Gravis in Sweden 2006–2016

The epidemiology of Myasthenia Gravis in Sweden was explored in a register-based setting over the time period 2006–2016. The incidence and prevalence of Myasthenia Gravis in Sweden have increased over time, and the rates are high in comparison with many other countries.

Open Access

Network of ictal head version in mesial temporal lobe epilepsy

  • First Published: 28 August 2020
Network of ictal head version in mesial temporal lobe epilepsy

This is a research of semiology of mesial temporal lobe epilepsy. It mainly demonstrated the network of the version of head and eyes.

Open Access

Preliminary results of posterior contralateral cervical 7 nerve transposition in the treatment of upper limb plegia after a stroke

  • First Published: 06 September 2020
Preliminary results of posterior contralateral cervical 7 nerve transposition in the treatment of upper limb plegia after a stroke

This study aimed to explore a shorter and safer contralateral C7 transposition pathway for the treatment of central upper limb paralysis. The distance of nerve transposition can be shortened by a posterior vertebral approach operation, where the contralateral C7 nerve can be anastomosed directly with the ipsilateral C7 nerve. In this approach, nerve transplantation is not needed and it is conducive to nerve regeneration and functional recovery.

Open Access

Can dementia be predicted using olfactory identification test in the elderly? A Bayesian network analysis

  • First Published: 31 August 2020
Can dementia be predicted using olfactory identification test in the elderly? A Bayesian network analysis

The Bayesian Network using olfactory identification test showed good predictive ability for predicting dementia, which suggests potential causal pathway for further investigation. Identification of odor cinnamon might be a useful indicator for dementia screening.

Open Access

Clinical management of hip fractures in elderly patients with dementia and postoperative 30-day mortality: A population-based cohort study

  • First Published: 06 September 2020
Clinical management of hip fractures in elderly patients with dementia and postoperative 30-day mortality: A population-based cohort study

In this register- and population-based cohort study of 12,309 older adults (age 70+) with hospital admission for a first-time hip fracture in 2013–2014, we found an increased 30-day postoperative mortality in patients with dementia. However, this excess mortality was not explained by the clinical factors examined (out-of-hours admission, surgery on weekends, anesthesia technique, and surgery volume per ward). Additionally, we found no difference in time to surgery by the patient's dementia status.

Open Access

Antrodia camphorata polysaccharide resists 6-OHDA-induced dopaminergic neuronal damage by inhibiting ROS-NLRP3 activation

  • First Published: 09 September 2020
Antrodia camphorata polysaccharide resists 6-OHDA-induced dopaminergic neuronal damage by inhibiting ROS-NLRP3 activation

Our study validated that 6-OHDA could induce apoptosis of dopaminergic neurons via ROS-NLRP3 activation. ACP could inhibit this signal and protect dopaminergic neurons, which might be promising in research of PD therapeutics.

Open Access

Remodeling of brain morphology in temporal lobe epilepsy

  • First Published: 17 September 2020
Remodeling of brain morphology in temporal lobe epilepsy

In focal cryptogenic epilepsy, morphological abnormalities often remain undetected at the macroscopic brain level. We use Multivariate Bayesian modeling analysis to link the spatial patterns of brain anatomy remodeling in temporal lobe epilepsy patients with their clinical phenotype. This approach allows detecting the regions which have an impact on the ongoing disease process. Our study could serve as proof-of-concept for the added value of topology analysis for detection of focal structural abnormalities in focal epilepsy that can be further implemented for other brain disorders.

Open Access

High-resolution, relational, resonance-based, electroencephalic mirroring (HIRREM) improves symptoms and autonomic function for insomnia: A randomized, placebo-controlled clinical trial

  • First Published: 17 September 2020
High-resolution, relational, resonance-based, electroencephalic mirroring (HIRREM) improves symptoms and autonomic function for insomnia: A randomized, placebo-controlled clinical trial

This controlled clinical trial observed significant added benefit to reduce symptoms of insomnia with use of a closed-loop, acoustic stimulation neurotechnology that echoes tones linked to brainwaves (HIRREM), compared to a sham using randomly generated tones. There was also significant improvement in multiple measures of autonomic cardiovascular regulation, with durability to 4 months postintervention, and group differences for sleep efficiency, total sleep time, and sleep onset latency. Results suggest that this noninvasive, nondrug intervention could provide a viable alternative for moderate to severe insomnia.

Open Access

Clinical features, MRI, and 18F-FDG-PET in differential diagnosis of Parkinson disease from multiple system atrophy

  • First Published: 17 September 2020
Clinical features, MRI, and 18F-FDG-PET in differential diagnosis of Parkinson disease from multiple system atrophy

This study identified the distinctive features of the clinic symptoms, MRI irregularity, and glucose metabolism on 18F-FDG-PET, which provided a new basis for the differential diagnosis of Parkinson's disease (PD), MSA with predominant Parkinsonism (MSA-P), and MSA with predominant cerebellar features (MSA-C).

Open Access

Two simple and rapid methods based on maximum diameter accurately estimate large lesion volumes in acute stroke

  • First Published: 09 September 2020
Two simple and rapid methods based on maximum diameter accurately estimate large lesion volumes in acute stroke

Assessment of lesion volume of infarcted tissue is often used in stroke trials to select patients most likely to benefit from thrombolysis. Here, we demonstrate that two simple diameter-based methods can accurately estimate lesion size with high sensitivity and specificity in the time-sensitive setting of acute stroke.

Open Access

Incidence and lesions causative of delusional misidentification syndrome after stroke

  • First Published: 07 September 2020
Incidence and lesions causative of delusional misidentification syndrome after stroke

The incidence of DMS was 1.1% after stroke; all of these patients had Fregoli syndrome. The lesions were concentrated around the right uncinate fasciculus.

REVIEW

Open Access

Memantine, Donepezil, or Combination Therapy—What is the best therapy for Alzheimer’s Disease? A Network Meta-Analysis

  • First Published: 10 September 2020
Memantine, Donepezil, or Combination Therapy—What is the best therapy for Alzheimer’s Disease? A Network Meta-Analysis

Memantine and donepezil are frequently used in its treatment, both as monotherapy and in combination. This multiple treatment comparison meta-analysis assessed the efficacy of these regimens and placebo in the management of AD.

ORIGINAL RESEARCH

Open Access

Apoaequorin differentially modulates fear memory in adult and aged rats

  • First Published: 18 September 2020
Apoaequorin differentially modulates fear memory in adult and aged rats

Two experiments were conducted to evaluate the impact of direct intrahippocampal infusion of the calcium binding protein apoaequorin (AQ) on trace and context fear memory. Experiment 1 involved a single infusion prior to training and experiment 2 involved an infusion prior to training and testing. Trace and context fear memory were impaired in aged rats relative to adult rats. Direct intrahippocampal infusion of AQ prior to both conditioning and testing reversed the aging-related context fear memory deficits.

Open Access

Anterior cingulate gamma-aminobutyric acid concentrations and electroconvulsive therapy

  • First Published: 17 September 2020
Anterior cingulate gamma-aminobutyric acid concentrations and electroconvulsive therapy

In depressed subjects treated with ECT (n = 40), gamma-aminobutyric acid (GABA+) levels did not change over treatment and we found no association between GABA+ levels and antidepressant response. However, change of GABA+ was associated with cognitive performance in a subset of patients (n = 24) who completed cognitive testing.

Open Access

Faced with one’s fear: Attentional bias in anorexia nervosa and healthy individuals upon confrontation with an obese body stimulus in an eye-tracking paradigm

  • First Published: 12 September 2020
Faced with one’s fear: Attentional bias in anorexia nervosa and healthy individuals upon confrontation with an obese body stimulus in an eye-tracking paradigm

Both women with anorexia nervosa (AN) and healthy controls exhibited an attention bias toward subjectively unattractive body parts when viewing the own and an obese body stimulus. The bias was more pronounced in AN when confronted with the obese stimulus. Both groups also gazed longer at body parts indicative of weight status.

Open Access

Neural and physiological relations observed in musical beat and meter processing

  • First Published: 12 September 2020
Neural and physiological relations observed in musical beat and meter processing

The current study reported a neural–physiological link that has not been previously discussed. Specifically, neural processing of music rhythm and the activity of parasympathetic nervous system (PSNS) are significantly related across individuals. These results shed light a new research direction in music cognition.

Open Access

Mental health and quality of life among healthcare professionals during the COVID-19 pandemic in India

  • First Published: 11 September 2020
Mental health and quality of life among healthcare professionals during the COVID-19 pandemic in India

In this cross-sectional survey of 204 Health Care Professionals (HCPs) from 13 states of India we found a high burden of depression and anxiety among young, unmarried HCPs serving COVID-19 patients. Further, we found that mental health distress negatively impacted overall quality of life. In countries like India where COVID-19 is rapidly spreading, there is an urgent need to safeguard the mental health of HCPs.

REVIEWS

Open Access

Sudden death in epilepsy: There is room for intracranial pressure

  • First Published: 19 September 2020
Sudden death in epilepsy: There is room for intracranial pressure

Seizures may in certain cases elicit acute edema which may represent an additional contributing factor in the cascade of events leading to SUDEP. We hypothesize that mild edema may especially progress to severe edema in certain patients e.g. those with sodium channel mutations which may represent an important mechanism to investigate in the context of understanding the significantly elevated risk of SUDEP in patients with SCN1A mutations.

Open Access

Can symptoms of anosmia and dysgeusia be diagnostic for COVID-19?

  • First Published: 16 September 2020
Can symptoms of anosmia and dysgeusia be diagnostic for COVID-19?

Neurological manifestations of COVID-19 can be in any form, assessment of such symptoms should be taken into consideration when examining patients for possible COVID-19 infection.

ORIGINAL RESEARCH

Open Access

Modulation of behavioral responses and CA1 neuronal death by nitric oxide in the neonatal rat's hypoxia model

  • First Published: 16 September 2020
Modulation of behavioral responses and CA1 neuronal death by nitric oxide in the neonatal rat's hypoxia model

Because there are many conflicting reports on the role of NO in learning and memory processes following brain injury, in this work, we induced hypoxia model in neonate rats as a sensitive period of synaptic plasticity formation on memory, and after exposing neonate rats to hypoxia, to evaluate the neuromodulatory effect of NO, we tested memory and histomorphometric changes in adult rat offspring in the presence of NO agonist and antagonist. Our main research findings were memory impairment and hippocampus cell atrophy in hypoxia rat, whereas the NOS inhibitor, L-NAME, significantly attenuated the negative effects of hypoxia on behavior and observed changes in the hippocampus.

REVIEW

Open Access

Cognitive impairment in NMOSD—More questions than answers

  • First Published: 06 October 2020
Cognitive impairment in NMOSD—More questions than answers

One of the most disabling symptoms of demyelinating diseases, diagnosed in 29%–67% of patients with NMOSD, is cognitive dysfunction, with such processes as memory, processing speed, executive function, attention, and verbal fluency being predominantly affected. However, description of cognition in NMOSD patients is still a relatively new area of research. In this review, we summarize the current knowledge on cognitive impairment profile, neuropsychological tests used to examine NMOSD patients, clinical and demographical variables affecting cognition, and magnetic resonance imaging correlates.

ORIGINAL RESEARCH

Open Access

Time will tell: Decision making in premanifest and manifest Huntington’s disease

  • First Published: 26 September 2020
Time will tell: Decision making in premanifest and manifest Huntington’s disease

In this study, we assessed decision making in manifest Huntington's disease (HD) and premanifest HD patients. We could show that jumping to conclusions is an early marker of cognitive dysfunction in premanifest HD patients prior to reaching criteria for the motor diagnosis of HD.

Open Access

Altered long- and short-range functional connectivity density associated with poor sleep quality in patients with chronic insomnia disorder: A resting-state fMRI study

  • First Published: 16 September 2020
Altered long- and short-range functional connectivity density associated with poor sleep quality in patients with chronic insomnia disorder: A resting-state fMRI study

Using graph theory assessment and functional connectivity density (FCD) methods to investigate the insomnia-related alterations to the intrinsic connectome in patients with CID patients, we found that insufficient sleep during chronic insomnia widely affects cortical functional activities, including disrupted FCD and increased short-range FCD, which is associated with poor sleep quality.