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https://www.readbyqxmd.com/read/27913404/default-mode-network-connectivity-traumatic-brain-injury-and-post-traumatic-amnesia
#1
Erin D Bigler
No abstract text is available yet for this article.
December 2016: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/27911310/cholinergic-modification-of-neurogenesis-and-gliosis-improves-the-memory-of%C3%A2-a%C3%AE-ppswe-psen1de9-alzheimer-s-disease-model-mice-fed-a-high-fat-diet
#2
Takeshi Matsuda, Tatsuhiro Hisatsune
We previously reported that neuroinflammation contributes to the amnesia of AβPPswe/PSEN1dE9 Alzheimer's disease model mice fed a high-fat diet to induce type-2 diabetes (T2DM-AD mice), but the underlying mechanism for the memory decline remained unclear. Recent studies have suggested that cholinergic modulation is involved in neuroinflammatory cellular reactions including neurogenesis and gliosis, and in memory improvement. In this study, we administered a broad-spectrum cholinesterase inhibitor, rivastigmine (2 mg/kg/day, s...
November 28, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27909401/implicit-learning-in-transient-global-amnesia-and-the-role-of-stress
#3
Frauke Nees, Martin Griebe, Anne Ebert, Michaela Ruttorf, Benjamin Gerber, Oliver T Wolf, Lothar R Schad, Achim Gass, Kristina Szabo
Transient global amnesia (TGA) is a disorder with reversible anterograde disturbance of explicit memory, frequently preceded by an emotionally or physically stressful event. By using magnetic resonance imaging (MRI) following an episode of TGA, small hippocampal lesions have been observed. Hence it has been postulated that the disorder is caused by the stress-related transient inhibition of memory formation in the hippocampus. In experimental studies, stress has been shown to affect both explicit and implicit learning-the latter defined as learning and memory processes that lack conscious awareness of the information acquired...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27905080/a-neural-model-of-normal-and-abnormal-learning-and-memory-consolidation-adaptively-timed-conditioning-hippocampus-amnesia-neurotrophins-and-consciousness
#4
Daniel J Franklin, Stephen Grossberg
How do the hippocampus and amygdala interact with thalamocortical systems to regulate cognitive and cognitive-emotional learning? Why do lesions of thalamus, amygdala, hippocampus, and cortex have differential effects depending on the phase of learning when they occur? In particular, why is the hippocampus typically needed for trace conditioning, but not delay conditioning, and what do the exceptions reveal? Why do amygdala lesions made before or immediately after training decelerate conditioning while those made later do not? Why do thalamic or sensory cortical lesions degrade trace conditioning more than delay conditioning? Why do hippocampal lesions during trace conditioning experiments degrade recent but not temporally remote learning? Why do orbitofrontal cortical lesions degrade temporally remote but not recent or post-lesion learning? How is temporally graded amnesia caused by ablation of prefrontal cortex after memory consolidation? How are attention and consciousness linked during conditioning? How do neurotrophins, notably brain-derived neurotrophic factor (BDNF), influence memory formation and consolidation? Is there a common output path for learned performance? A neural model proposes a unified answer to these questions that overcome problems of alternative memory models...
November 30, 2016: Cognitive, Affective & Behavioral Neuroscience
https://www.readbyqxmd.com/read/27902140/apprenticeships-seen-as-a-backwards-step
#5
Petra Kendall-Raynor
The announcement of nursing degree apprenticeships has been criticised as an 'act of amnesia' by a leading nurse professor.
November 30, 2016: Nursing Standard
https://www.readbyqxmd.com/read/27899170/confabulation-developing-the-emotion-dysregulation-hypothesis
#6
REVIEW
Oliver H Turnbull, Christian E Salas
Confabulations offer unique opportunities for establishing the neurobiological basis of delusional thinking. As regards causal factors, a review of the confabulation literature suggests that neither amnesia nor executive impairment can be the sole (or perhaps even the primary) cause of all delusional beliefs - though they may act in concert with other factors. A key perspective in the modern literature is that many delusions have an emotionally positive or 'wishful' element, that may serve to modulate or manage emotional experience...
October 19, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27892821/self-regulation-upon-return-to-driving-after-traumatic-brain-injury
#7
James R Gooden, Jennie L Ponsford, Judith L Charlton, Pamela Ross, Shawn Marshall, Sylvain Gagnon, Michel Bédard, Renerus J Stolwyk
The aim of this study was to explore self-reported driving habits and the factors associated with these within the first three months of return to driving following traumatic brain injury (TBI). Participants included 24 individuals with moderate to severe TBI (post-traumatic amnesia duration M = 33.26, SD = 29.69 days) and 28 healthy age, education, and gender-matched controls who completed an on-road assessment. Driving frequency and avoidance questionnaires were administered to assess premorbid driving, anticipated driving upon resuming, and driving at three months post-assessment...
November 28, 2016: Neuropsychological Rehabilitation
https://www.readbyqxmd.com/read/27890324/motor-skill-learning-and-offline-changes-in-tga-patients-with-acute-hippocampal-ca1-lesions
#8
Juliane Döhring, Anne Stoldt, Karsten Witt, Robby Schönfeld, Günther Deuschl, Jan Born, Thorsten Bartsch
Learning and the formation of memory are reflected in various memory systems in the human brain such as the hippocampus based declarative memory system and the striatum-cortex based system involved in motor sequence learning. It is a matter of debate how both memory systems interact in humans during learning and consolidation and how this interaction is influenced by sleep. We studied the effect of an acute dysfunction of hippocampal CA1 neurons on the acquisition (on-line condition) and off-line changes of a motor skill in patients with a transient global amnesia (TGA)...
October 24, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27886629/transient-epileptic-amnesia-over-twenty-years-long-term-follow-up-of-a-case-series-with-three-detailed-reports
#9
Sharon A Savage, Christopher R Butler, John R Hodges, Adam Z Zeman
PURPOSE: Transient Epileptic Amnesia (TEA) is a form of adult onset temporal lobe epilepsy characterised by ictal amnesia. The amnesic seizures are often accompanied by interical memory disturbance, involving autobiographical amnesia and accelerated long-term forgetting. Short-term follow-up studies suggest a relatively stable cognitive profile once treated, but recent case reports raise concerns regarding the risk of developing Alzheimer's disease (AD). The current study reports clinical and cognitive outcome in TEA patients over a 20-year period...
November 14, 2016: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/27884316/the-case-seizure-ophthalmoplegia-and-amnesia-in-a-peritoneal-dialysis-patient
#10
Chang Seong Kim, Eun Hui Bae, Seong Kwon Ma, Soo Wan Kim
No abstract text is available yet for this article.
December 2016: Kidney International
https://www.readbyqxmd.com/read/27880886/hippocampal-and-diencephalic-pathology-in-developmental-amnesia
#11
Anna M Dzieciol, Jocelyne Bachevalier, Kadharbatcha S Saleem, David G Gadian, Richard Saunders, W K Kling Chong, Tina Banks, Mortimer Mishkin, Faraneh Vargha-Khadem
Developmental amnesia (DA) is a selective episodic memory disorder associated with hypoxia-induced bilateral hippocampal atrophy of early onset. Despite the systemic impact of hypoxia-ischaemia, the resulting brain damage was previously reported to be largely limited to the hippocampus. However, the thalamus and the mammillary bodies are parts of the hippocampal-diencephalic network and are therefore also at risk of injury following hypoxic-ischaemic events. Here, we report a neuroimaging investigation of diencephalic damage in a group of 18 patients with DA (age range 11-35 years), and an equal number of controls...
September 30, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27872225/the-head-trauma-amnesia-cure-the-making-of-a-medical-myth
#12
Nitin K Sethi, Mary V Spiers
No abstract text is available yet for this article.
November 22, 2016: Neurology
https://www.readbyqxmd.com/read/27870900/to-fear-is-to-gain-the-role-of-fear-recognition-in-risky-decision-making-in-tbi-patients-and-healthy-controls
#13
Annemarie C Visser-Keizer, Herma J Westerhof-Evers, Marleen J J Gerritsen, Joukje van der Naalt, Jacoba M Spikman
Fear is an important emotional reaction that guides decision making in situations of ambiguity or uncertainty. Both recognition of facial expressions of fear and decision making ability can be impaired after traumatic brain injury (TBI), in particular when the frontal lobe is damaged. So far, it has not been investigated how recognition of fear influences risk behavior in healthy subjects and TBI patients. The ability to recognize fear is thought to be related to the ability to experience fear and to use it as a warning signal to guide decision making...
2016: PloS One
https://www.readbyqxmd.com/read/27867000/neuromodulatory-effects-of-the-dorsal-hippocampal-endocannabinoid-system-in-dextromethorphan-morphine-induced-amnesia
#14
Zahra Ghasemzadeh, Ameneh Rezayof
Dextromethorphan which is an active ingredient in many cough medicines has been previously shown to potentiate amnesic effect of morphine in rats. However, the effect of dextromethorphan, that is also a noncompetitive N-methyl-D-aspartate (NMDA) receptor antagonist, in combination with morphine on hippocampus-based long term memory has not been well characterized. The aim of the present study was to assess the possible role of endocannabinoid system of the dorsal hippocampus in dextromethorphan /morphine-induced amnesia...
November 17, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27863873/a-case-of-transient-global-amnesia-with-small-left-putamen-infarction
#15
Kosuke Yoshida
A 67-year-old right-handed woman experienced a sudden anterograde and retrograde short-term memory deficit that recovered on the next day. Magnetic resonance imaging (MRI) showed a spotty high-intensity lesion in the left putamen in the diffusion-weighted and fluid-attenuated inversion recovery images. Transient global amnesia due to lacunar infarction of the left putamen was diagnosed. Transient global amnesia is characterized by a sudden onset of anterograde amnesia that disappears within 24 hours. The cause of transient global amnesia is still uncertain...
November 15, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27856531/confused-after-spirometry-a-unifying-diagnosis
#16
John Charles Williamson, Andrew J Larner
A 67-year-old woman was diagnosed with transient global amnesia having presented with an abrupt and temporary disruption in her memory function. Her symptom onset came shortly after a visit to her general practitioner where she had performed bedside spirometry. Following symptom resolution, she was discharged home with reassurance.
November 17, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27852471/what-does-extinction-have-to-do-with-confabulation
#17
REVIEW
Armin Schnider, Louis Nahum, Radek Ptak
Behaviourally spontaneous confabulation denotes a distinct syndrome consisting of confabulations that patients act upon, disorientation, and amnesia. It corresponds to the stable form of the original Korsakoff syndrome. While the syndrome may also occur in confusional states and degenerative dementia, this article is about the syndrome as it occurs after acute and focal brain damage. The patients act according to ideas and obligations that can mostly be traced back to real experiences in their past, but which are not currently valid guides of thinking and behaviour...
November 1, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27842701/the-relationship-between-eye-movements-and-subsequent-recognition-evidence-from-individual-differences-and-amnesia
#18
Rosanna K Olsen, Vinoja Sebanayagam, Yunjo Lee, Morris Moscovitch, Cheryl L Grady, R Shayna Rosenbaum, Jennifer D Ryan
There is consistent agreement regarding the positive relationship between cumulative eye movement sampling and subsequent recognition, but the role of the hippocampus in this sampling behavior is currently unknown. It is also unclear whether the eye movement repetition effect, i.e., fewer fixations to repeated, compared to novel, stimuli, depends on explicit recognition and/or an intact hippocampal system. We investigated the relationship between cumulative sampling, the eye movement repetition effect, subsequent memory, and the hippocampal system...
October 22, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27833646/validation-of-the-italian-version-of-the-dissociative-experience-scale-for-adolescents-and-young-adults
#19
Concetta De Pasquale, Federica Sciacca, Zira Hichy
BACKGROUND: The Dissociative Experience Scale for adolescent (A-DES), a 30-item, multidimensional, self-administered questionnaire, was validated using a large sample of American young people sample. We reported the linguistic validation process and the metric validity of the Italian version of A-DES in the Italy. METHODS: A set of questionnaires was provided to a total of 633 participants from March 2015 to April 2016. The participants consisted of 282 boys and 351 girls, and their average age was between 18 and 24 years old...
2016: Annals of General Psychiatry
https://www.readbyqxmd.com/read/27830070/recurrent-transient-global-amnesia-as-presenting-symptoms-of-cadasil
#20
Luca Pradotto, Laura Orsi, Monica Mencarelli, Marcella Caglio, Danilo Lauro, Alessandra Milesi, Anna Di Blasio, Alessandro Mauro
Despite transient global amnesia is considered unusual in Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) and causal relation is still unclear, this report suggests to consider CADASIL in those patients with recurrent transient global amnesia, especially when MRI shows multifocal hyperintensities affecting the cerebral white matter or when it is followed by cognitive decline.
November 2016: Clinical Case Reports
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