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Visual short term memory

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https://www.readbyqxmd.com/read/27909005/repetition-suppression-and-memory-for-faces-is-reduced-in-adults-with-autism-spectrum-conditions
#1
Michael P Ewbank, Philip J Pell, Thomas E Powell, Elisabeth A H von dem Hagen, Simon Baron-Cohen, Andrew J Calder
Autism spectrum conditions (ASC) are associated with a number of atypicalities in face processing, including difficulties in face memory. However, the neural mechanisms underlying this difficulty are unclear. In neurotypical individuals, repeated presentation of the same face is associated with a reduction in activity, known as repetition suppression (RS), in the fusiform face area (FFA). However, to date, no studies have investigated RS to faces in individuals with ASC, or the relationship between RS and face memory...
November 30, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/27896631/selective-weighting-of-action-related-feature-dimensions-in-visual-working-memory
#2
Anna Heuer, Anna Schubö
Planning an action primes feature dimensions that are relevant for that particular action, increasing the impact of these dimensions on perceptual processing. Here, we investigated whether action planning also affects the short-term maintenance of visual information. In a combined memory and movement task, participants were to memorize items defined by size or color while preparing either a grasping or a pointing movement. Whereas size is a relevant feature dimension for grasping, color can be used to localize the goal object and guide a pointing movement...
November 28, 2016: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/27895884/a-note-on-drawing-conclusions-in-the-study-of-visual-search-and-the-use-of-slopes-in-particular
#3
James T Townsend
The slope of the set size function as a critical statistic first gained favor in the 1960s due in large part to the seminal papers on short-term memory search by Saul Sternberg and soon, many others. In the 1980s, the slope statistic reemerged in much the same role in visual search as Anne Treisman and again, soon many others brought that research topic into great prominence. This note offers the historical and current perspective of the present author, who has devoted a significant portion of his theoretical efforts to this and related topics over the past 50 years...
November 2016: I-Perception
https://www.readbyqxmd.com/read/27883911/examining-the-relationship-between-rapid-automatized-naming-and-arithmetic-fluency-in-chinese-kindergarten-children
#4
Jiaxin Cui, George K Georgiou, Yiyun Zhang, Yixun Li, Hua Shu, Xinlin Zhou
Rapid automatized naming (RAN) has been found to predict mathematics. However, the nature of their relationship remains unclear. Thus, the purpose of this study was twofold: (a) to examine how RAN (numeric and non-numeric) predicts a subdomain of mathematics (arithmetic fluency) and (b) to examine what processing skills may account for the RAN-arithmetic fluency relationship. A total of 160 third-year kindergarten Chinese children (83 boys and 77 girls, mean age=5.11years) were assessed on RAN (colors, objects, digits, and dice), nonverbal IQ, visual-verbal paired associate learning, phonological awareness, short-term memory, speed of processing, approximate number system acuity, and arithmetic fluency (addition and subtraction)...
November 21, 2016: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/27879322/the-whole-warps-the-sum-of-its-parts-gestalt-defined-group-mean-size-biases-memory-for-individual-objects
#5
Jennifer E Corbett
The efficiency of averaging properties of sets without encoding redundant details is analogous to gestalt proposals that perception is parsimoniously organized as a function of recurrent order in the world. This similarity suggests that grouping and averaging are part of a broader set of strategies allowing the visual system to circumvent capacity limitations. To examine how gestalt grouping affects the manner in which information is averaged and remembered, I compared the error in observers' adjustments of remembered sizes of individual circles in two different mean-size sets defined by similarity, proximity, connectedness, or a common region...
November 22, 2016: Psychological Science
https://www.readbyqxmd.com/read/27860108/cognitive-abilities-predict-death-during-the-next-15%C3%A2-years-in-older-japanese-adults
#6
Yukiko Nishita, Chikako Tange, Makiko Tomida, Rei Otsuka, Fujiko Ando, Hiroshi Shimokata
AIM: The longitudinal relationship between cognitive abilities and subsequent death was investigated among community-dwelling older Japanese adults. METHODS: Participants (n = 1060; age range 60-79 years) comprised the first-wave participants of the National Institute for Longevity Sciences-Longitudinal Study of Aging. Participants' cognitive abilities were measured at baseline using the Japanese Wechsler Adult Intelligence Scale-Revised Short Form, which includes the following tests: Information (general knowledge), Similarities (logical abstract thinking), Picture Completion (visual perception and long-term visual memory) and Digit Symbol (information processing speed)...
November 17, 2016: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/27859916/mild-thyrotoxicosis-leads-to-brain-perfusion-changes-an-arterial-spin-labeling-study
#7
Anna Göbel, Marcus Heldmann, Alexander Sartorius, Martin Göttlich, Anna-Luise Dirk, Georg Brabant, Thomas F Münte
Hypo- and hyperthyroidism have effects on brain structure and function as well as cognitive processes, including memory. However, little is known about the influence of thyroid hormones on brain perfusion and the relationship of such perfusion changes to cognition. This study aimed to demonstrate the effect of short-term experimental hyperthyroidism on brain perfusion in healthy volunteers and to assess whether perfusion changes, if present, are related to cognitive performance. It is known that an interaction exists between brain perfusion and cerebral oxygen consumption rate and it is believed that neural activation increases cerebral regional perfusion rate in brain areas associated with memory...
November 9, 2016: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/27859914/visual-short-term-memory-for-high-resolution-associations-is-impaired-in-patients-with-medial-temporal-lobe-damage
#8
Joshua D Koen, Alyssa A Borders, Michael T Petzold, Andrew P Yonelinas
The medial temporal lobe (MTL) plays a critical role in episodic long-term memory, but whether the MTL is necessary for visual short-term memory is controversial. Some studies have indicated that MTL damage disrupts visual short-term memory performance whereas other studies have failed to find such evidence. To account for these mixed results, it has been proposed that the hippocampus is critical in supporting short-term memory for high resolution complex bindings, while the cortex is sufficient to support simple, low resolution bindings...
November 16, 2016: Hippocampus
https://www.readbyqxmd.com/read/27830412/nobiletin-improves-emotional-and-novelty-recognition-memory-but-not-spatial-referential-memory
#9
Jiyun Kang, Jung-Won Shin, Yoo-Rim Kim, Kelley M Swanberg, Yooseung Kim, Jae Ryong Bae, Young Ki Kim, Jinwon Lee, Soo-Yeon Kim, Nak-Won Sohn, Sungho Maeng
How to maintain and enhance cognitive functions for both aged and young populations is a highly interesting subject. But candidate memory-enhancing reagents are tested almost exclusively on lesioned or aged animals. Also, there is insufficient information on the type of memory these reagents can improve. Working memory, located in the prefrontal cortex, manages short-term sensory information, but, by gaining significant relevance, this information is converted to long-term memory by hippocampal formation and/or amygdala, followed by tagging with space-time or emotional cues, respectively...
November 9, 2016: Journal of Natural Medicines
https://www.readbyqxmd.com/read/27826281/can-touch-screen-tablets-be-used-to-assess-cognitive-and-motor-skills-in-early-years-primary-school-children-a-cross-cultural-study
#10
Nicola J Pitchford, Laura A Outhwaite
Assessment of cognitive and motor functions is fundamental for developmental and neuropsychological profiling. Assessments are usually conducted on an individual basis, with a trained examiner, using standardized paper and pencil tests, and can take up to an hour or more to complete, depending on the nature of the test. This makes traditional standardized assessments of child development largely unsuitable for use in low-income countries. Touch screen tablets afford the opportunity to assess cognitive functions in groups of participants, with untrained administrators, with precision recording of responses, thus automating the assessment process...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27825957/dose-response-effects-of-water-supplementation-on-cognitive-performance-and-mood-in-children-and-adults
#11
Caroline J Edmonds, Laura Crosbie, Fareeha Fatima, Maryam Hussain, Nicole Jacob, Mark Gardner
Water supplementation has been found to facilitate visual attention and short-term memory, but the dose required to improve performance is not yet known. We assessed the dose response effect of water on thirst, mood and cognitive performance in both adults and children. Participants were offered either no water, 25 ml or 300 ml water to drink. Study 1 assessed 96 adults and in Study 2, data are presented from 60 children aged 7-9 years. In both studies, performance was assessed at baseline and 20 min after drinking (or no drink); on thirst and mood scales, letter cancellation and a digit span test...
November 5, 2016: Appetite
https://www.readbyqxmd.com/read/27762577/saccadic-eye-movements-impose-a-natural-bottleneck-on-visual-short-term-memory
#12
Sven Ohl, Martin Rolfs
Visual short-term memory (VSTM) is a crucial repository of information when events unfold rapidly before our eyes, yet it maintains only a fraction of the sensory information encoded by the visual system. Here, we tested the hypothesis that saccadic eye movements provide a natural bottleneck for the transition of fragile content in sensory memory to VSTM. In 4 experiments, we show that saccades, planned and executed after the disappearance of a memory array, markedly bias visual memory performance. First, items that had appeared at the saccade target were more readily remembered than items that had appeared elsewhere, even though the saccade was irrelevant to the memory task (Experiment 1)...
October 20, 2016: Journal of Experimental Psychology. Learning, Memory, and Cognition
https://www.readbyqxmd.com/read/27739162/the-effects-of-visual-attention-span-and-phonological-decoding-in-reading-comprehension-in-dyslexia-a-path-analysis
#13
Chen Chen, Matthew H Schneps, Katherine E Masyn, Jennifer M Thomson
Increasing evidence has shown visual attention span to be a factor, distinct from phonological skills, that explains single-word identification (pseudo-word/word reading) performance in dyslexia. Yet, little is known about how well visual attention span explains text comprehension. Observing reading comprehension in a sample of 105 high school students with dyslexia, we used a pathway analysis to examine the direct and indirect path between visual attention span and reading comprehension while controlling for other factors such as phonological awareness, letter identification, short-term memory, IQ and age...
December 0: Dyslexia: the Journal of the British Dyslexia Association
https://www.readbyqxmd.com/read/27737811/effects-of-manganese-exposure-on-visuoperception-and-visual-memory-in-schoolchildren
#14
D Hernández-Bonilla, C Escamilla-Núñez, D Mergler, S Rodríguez-Dozal, M Cortez-Lugo, S Montes, L A Tristán-López, M Catalán-Vázquez, A Schilmann, Horacio Riojas-Rodriguez
BACKGROUND: Manganese (Mn) is an essential metal involved in multiple physiological functions. Environmental exposure to airborne Mn is associated with neurocognitive deficits in humans. Children, whose nervous system is in development, are particularly susceptible to Mn neurotoxicity. OBJECTIVE: The objective of this study was to assess the association between Mn environmental exposure, and effects on visuoperception and visual memory in schoolchildren. METHODS: We assessed schoolchildren between 7 and 11 years old, with similar socioeconomic status, from the mining district of Molango (n=148) and Agua Blanca (n=119, non-mining area) in Hidalgo state, Mexico...
October 11, 2016: Neurotoxicology
https://www.readbyqxmd.com/read/27732718/interrelationships-between-working-memory-processing-speed-and-language-development-in-the-age-range-2-4-years
#15
Jayne Newbury, Thomas Klee, Stephanie F Stokes, Catherine Moran
Purpose: This study explored associations between working memory and language in children aged 2-4 years. Method: Seventy-seven children aged 24-30 months were assessed on tests measuring language, visual cognition, verbal working memory (VWM), phonological short-term memory (PSTM), and processing speed. A standardized test of receptive and expressive language was used as the outcomes measure 18 months later. Results: There were moderate-to-strong longitudinal bivariate relationships between the 3 processing measures and language outcomes...
October 12, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/27729149/the-contribution-of-short-term-memory-capacity-to-reading-ability-in-adolescents-with-cochlear-implants
#16
Lindsey Edwards, Lynne Aitkenhead, Dawn Langdon
OBJECTIVE: This study aimed to establish the relationship between short-term memory capacity and reading skills in adolescents with cochlear implants. METHODS AND MATERIALS: A between-groups design compared a group of young people with cochlear implants with a group of hearing peers on measures of reading, and auditory and visual short-term memory capacity. The groups were matched for non-verbal IQ and age. The adolescents with cochlear implants were recruited from the Cochlear Implant Programme at a specialist children's hospital...
November 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27713722/episodic-short-term-recognition-requires-encoding-into-visual-working-memory-evidence-from-probe-recognition-after-letter-report
#17
Christian H Poth, Werner X Schneider
Human vision is organized in discrete processing episodes (e.g., eye fixations or task-steps). Object information must be transmitted across episodes to enable episodic short-term recognition: recognizing whether a current object has been seen in a previous episode. We ask whether episodic short-term recognition presupposes that objects have been encoded into capacity-limited visual working memory (VWM), which retains visual information for report. Alternatively, it could rely on the activation of visual features or categories that occurs before encoding into VWM...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27708595/limited-near-and-far-transfer-effects-of-jungle-memory-working-memory-training-on-learning-mathematics-in-children-with-attentional-and-mathematical-difficulties
#18
Michel Nelwan, Evelyn H Kroesbergen
The goal of this randomized controlled trial was to investigate whether Jungle Memory working memory training (JM) affects performance on working memory tasks, performance in mathematics and gains made on a mathematics training (MT) in school aged children between 9-12 years old (N = 64) with both difficulties in mathematics, as well as attention and working memory. Children were randomly assigned to three groups and were trained in two periods: (1) JM first, followed by MT, (2) MT first, followed by JM, and (3) a control group that received MT only...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27708575/physical-exercise-preserves-adult-visual-plasticity-in-mice-and-restores-it-after-a-stroke-in-the-somatosensory-cortex
#19
Evgenia Kalogeraki, Justyna Pielecka-Fortuna, Janika M Hüppe, Siegrid Löwel
The primary visual cortex (V1) is widely used to study brain plasticity, which is not only crucial for normal brain function, such as learning and memory, but also for recovery after brain injuries such as stroke. In standard cage (SC) raised mice, experience-dependent ocular dominance (OD) plasticity in V1 declines with age and is compromised by a lesion in adjacent and distant cortical regions. In contrast, mice raised in an enriched environment (EE), exhibit lifelong OD plasticity and are protected from losing OD plasticity after a stroke-lesion in the somatosensory cortex...
2016: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/27702740/neuro-cognitive-mechanisms-of-simultanagnosia-in-patients-with-posterior-cortical-atrophy
#20
Julia Neitzel, Marion Ortner, Marleen Haupt, Petra Redel, Timo Grimmer, Igor Yakushev, Alexander Drzezga, Peter Bublak, Christoph Preul, Christian Sorg, Kathrin Finke
Posterior cortical atrophy is dominated by progressive degradation of parieto-occipital grey and white matter, and represents in most cases a variant of Alzheimer's disease. Patients with posterior cortical atrophy are characterized by increasing higher visual and visuo-spatial impairments. In particular, a key symptom of posterior cortical atrophy is simultanagnosia i.e. the inability to perceive multiple visual objects at the same time. Two neuro-cognitive mechanisms have been suggested to underlie simultanagnosia, either reduced visual short-term memory capacity or decreased visual processing speed possibly resulting from white matter impairments over and above damage to cortical brain areas...
December 2016: Brain: a Journal of Neurology
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