Abstract:
:A task that has been intensively studied at the neural level is f lutter discrimination. I argue that f lutter discrimination entails a combination of a temporal assignment problem and a quantity comparison problem, and propose a neural network model of how these problems are solved. The network combines unsupervised and one-layer supervised training. The unsupervised part clusters input features (stimulus + time window) and the supervised part categorizes the resulting clusters. After training, the model shows a good fit with both neural and behavioral properties. New predictions are outlined and links with other cognitive domains are pointed out.
journal_name
J Cogn Neuroscijournal_title
Journal of cognitive neuroscienceauthors
Verguts Tdoi
10.1162/jocn.2007.19.3.409subject
Has Abstractpub_date
2007-03-01 00:00:00pages
409-19issue
3eissn
0898-929Xissn
1530-8898journal_volume
19pub_type
杂志文章abstract::A growing body of literature suggests that human individuals differ in their ability to process face identity. These findings mainly stem from explicit behavioral tasks, such as the Cambridge Face Memory Test (CFMT). However, it remains an open question whether such individual differences can be found in the absence o...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_01126
更新日期:2017-08-01 00:00:00
abstract::Impaired retrieval of conceptual knowledge for actions has been associated with lesions of left premotor, left parietal, and left middle temporal areas [Tranel, D., Kemmerer, D., Adolphs, R., Damasio, H., & Damasio, A. R. Neural correlates of conceptual knowledge for actions. Cognitive Neuropsychology, 409-432, 2003]....
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn.2007.19.6.1004
更新日期:2007-06-01 00:00:00
abstract::The neural mechanisms that mediate metacognitive ability (the capacity to accurately reflect on one's own cognition and experience) remain poorly understood. An important question is whether metacognitive capacity is a domain-general skill supported by a core neuroanatomical substrate or whether regionally specific ne...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_00741
更新日期:2015-03-01 00:00:00
abstract::The solution of a problem left unresolved in the evening can sometimes pop into mind as a sudden insight after a night of sleep in the following morning. Although favorable effects of sleep on insightful behavior have been experimentally confirmed, the neural mechanisms determining this delayed insight remain unknown....
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn.2010.21550
更新日期:2011-08-01 00:00:00
abstract::Human alpha-band activity (8-12 Hz) has been proposed to index a variety of mechanisms during visual processing. Here, we distinguished between an account in which alpha suppression indexes selective attention versus an account in which it indexes subsequent working memory storage. We manipulated two aspects of the vi...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_01637
更新日期:2020-10-15 00:00:00
abstract::The current study used quantitative electroencephalography (qEEG) to characterize individual differences in neural rhythms at rest and to relate them to fluid reasoning ability, to first language proficiency, and to subsequent second language (L2) learning ability, with the goal of obtaining a better understanding of ...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_01337
更新日期:2019-01-01 00:00:00
abstract::Human cognition is characterized by astounding flexibility, enabling us to select appropriate information according to the objectives of our current task. A circuit of frontal and parietal brain regions, often referred to as the frontoparietal attention network or multiple-demand (MD) regions, are believed to play a f...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_01039
更新日期:2017-02-01 00:00:00
abstract::Both local discourse and world knowledge are known to influence sentence processing. We investigated how these two sources of information conspire in language comprehension. Two types of critical sentences, correct and world knowledge anomalies, were preceded by either a neutral or a local context. The latter made the...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn.2008.21163
更新日期:2009-12-01 00:00:00
abstract::The aim of this study was to find the most prominent source of intersubject variability in neuronal activation for reading familiar words aloud. To this end, we collected functional imaging data from a large sample of subjects (n = 76) with different demographic characteristics such as handedness, sex, and age, while ...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn.2009.21084
更新日期:2009-04-01 00:00:00
abstract::Theoretical considerations and diverse empirical data from clinical, psycholinguistic, and developmental studies suggest that language comprehension processes are decomposable into separate subsystems, including distinct systems for semantic and grammatical processing. Here we report that event-related potentials (ERP...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn.1991.3.2.151
更新日期:1991-04-01 00:00:00
abstract::When a stimulus is associated with a reward, it becomes prioritized, and the allocation of attention to that stimulus increases. For low-level features, such as color, this reward-based allocation of attention can manifest early in time and as a faster and stronger shift of attention to targets with that color, as ref...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_00917
更新日期:2016-04-01 00:00:00
abstract::Abstract Recent physiological experiments have shown that the responses of many neurons in V1 and V3a are modulated by the direction of gaze. We have developed a neural network model of the hierarchy of maps in visual cortex to explore the hypothesis that visual features are encoded in egocentric (spatio-topic) coordi...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn.1993.5.2.150
更新日期:1993-04-01 00:00:00
abstract::The role of the left and right hemisphere was examined during semantic priming by antonyms, remote associates, and unrelated words. Targets presented directly to the left hemisphere showed an early facilitation and a late developing inhibition, while targets presented directly to the right hemisphere showed a late dev...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn.1991.3.4.313
更新日期:1991-10-01 00:00:00
abstract::Implicit motor learning tasks typically involve comparisons of subject responses during a sequence versus a random condition. In neuroimaging, brain regions that are correlated with a sequence are described, but the temporal relationship of sequence versus nonsequence conditions is often not explored. We present a fun...
journal_title:Journal of cognitive neuroscience
pub_type: 临床试验,杂志文章
doi:10.1162/089892901753165881
更新日期:2001-10-01 00:00:00
abstract::Transcranial direct current stimulation (tDCS) has been reported to improve working memory (WM) performance in healthy individuals, suggesting its value as a means of cognitive enhancement. However, recent meta-analyses concluded that tDCS has little or no effect on WM in healthy participants. In this article, we revi...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章,meta分析,评审
doi:10.1162/jocn_a_00956
更新日期:2016-08-01 00:00:00
abstract::The fundamental role that our long-term memories play in guiding perception is increasingly recognized, but the functional and neural mechanisms are just beginning to be explored. Although experimental approaches are being developed to investigate the influence of long-term memories on perception, these remain mostly ...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_01172
更新日期:2017-12-01 00:00:00
abstract::The fusion of rhythm, beat perception, and movement is often summarized under the term "entrainment" and becomes obvious when we effortlessly tap our feet or snap our fingers to the pulse of music. Entrainment to music involves a large network of brain structures, and neural oscillations at beat-related frequencies ca...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_01013
更新日期:2016-12-01 00:00:00
abstract::Recent fMRI studies have found that distinct neural systems may mediate perceptual category learning under implicit and explicit learning conditions. In these previous studies, however, different stimulus-encoding processes may have been associated with implicit versus explicit learning. The present design was aimed a...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn.2010.21538
更新日期:2011-07-01 00:00:00
abstract::Working memory enables us to retain past sensations in service of anticipated task demands. How we prepare for anticipated task demands during working memory retention remains poorly understood. Here, we focused on the role of time-asking how temporal expectations help prepare for ensuing memory-guided behavior. We ma...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_01626
更新日期:2020-12-01 00:00:00
abstract::The perceptual organization of pitch is frequently described as helical, with a monotonic dimension of pitch height and a circular dimension of pitch chroma, accounting for the repeating structure of the octave. Although the neural representation of pitch height is widely studied, the way in which pitch chroma represe...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_01374
更新日期:2019-05-01 00:00:00
abstract::Conscious behavioral intentions can frequently fail under conditions of attentional depletion. In attempting to trace the cognitive origin of this effect, we hypothesized that failures of action control--specifically, oculomotor movement--can result from the imposition of fronto-executive load. To evaluate this predic...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/089892902317205357
更新日期:2002-01-01 00:00:00
abstract::A common complaint of normal aging is the increase in word-finding failures such as tip-of-the-tongue states (TOTs). Behavioral research identifies TOTs as phonological retrieval failures, and recent findings [Shafto, M. A., Burke, D. M., Stamatakis, E. A., Tam, P., & Tyler, L. K. On the tip-of-the-tongue: Neural corr...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn.2009.21321
更新日期:2010-07-01 00:00:00
abstract::In everyday situations, we often rely on our memories to find what we are looking for in our cluttered environment. Recently, we developed a new experimental paradigm to investigate how long-term memory (LTM) can guide attention and showed how the pre-exposure to a complex scene in which a target location had been lea...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_00294
更新日期:2012-12-01 00:00:00
abstract::We studied the brain activation patterns in two visual image processing tasks requiring judgements on object construction (FIT task) or object sameness (SAME task). Eight right-handed healthy human subjects (four women and four men) performed the two tasks in a randomized block design while 5-mm, multislice functional...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/089892901564180
更新日期:2001-01-01 00:00:00
abstract::The stop signal task (SST) is the gold standard experimental model of inhibitory control. However, neither SST condition-contrast (stop vs. go, successful vs. failed stop) purely operationalizes inhibition. Because stop trials include a second, infrequent signal, the stop versus go contrast confounds inhibition with a...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_01503
更新日期:2020-04-01 00:00:00
abstract::We investigated the sources of dual-task costs arising in multisensory working memory (WM) tasks, where stimuli from different modalities have to be simultaneously maintained. Performance decrements relative to unimodal single-task baselines have been attributed to a modality-unspecific central WM store, but such cost...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_01348
更新日期:2019-02-01 00:00:00
abstract::Previous studies indicate that conscious face perception may be related to neural activity in a large time window around 170-800 msec after stimulus presentation, yet in the majority of these studies changes in conscious experience are confounded with changes in physical stimulation. Using multivariate classification ...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_00353
更新日期:2013-06-01 00:00:00
abstract::The ability to generate and process semantic relations is central to many aspects of human cognition. Theorists have long debated whether such relations are coarsely coded as links in a semantic network or finely coded as distributed patterns over some core set of abstract relations. The form and content of the concep...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_01620
更新日期:2020-08-07 00:00:00
abstract::Events that violate predictions are thought to not only modulate activity within the hippocampus and PFC but also enhance communication between the two regions. Scalp and intracranial EEG studies have shown that oscillations in the theta frequency band are enhanced during processing of contextually unexpected informat...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_01302
更新日期:2018-11-01 00:00:00
abstract::Extant research has examined the process of decision making under uncertainty, specifically in situations of ambiguity. However, much of this work has been conducted in the context of semantic and low-level visual processing. An open question is whether ambiguity in social signals (e.g., emotional facial expressions) ...
journal_title:Journal of cognitive neuroscience
pub_type: 杂志文章
doi:10.1162/jocn_a_00363
更新日期:2013-04-01 00:00:00