Semantic memory

The Encyclopedia of Human Behavior, Second Edition is a comprehensive three-volume reference source on human action and reaction, and the thoughts, feelings, and physiological functions behind those actions

Implicit memory

The Encyclopedia of Human Behavior, Second Edition is a comprehensive three-volume reference source on human action and reaction, and the thoughts, feelings, and physiological functions behind those actions

Attention, Memory, and Concepts in Autism

peer-reviewed publicatio

Mental simulation for grounding object cognition

Grounded (embodied) theories of cognition propose that memory, including knowledge and meaning, is grounded in sensorimotor and mental state processes. The main proposed mechanism for how memory is grounded is mental simulation. Simulation occurs when neural activity in modal association cortex triggers time-locked, recurrent and feedback activity across multiple lower-level modal processing areas from which the memory was initially constructed. Through this distributed multi-regional activity, seeing an object or reading its name (e.g., “dog”) re-enacts associated features that were stored during earlier learning experiences (e.g. its shape, color, motion, actions with it), thereby constructing cognition, memory, and meaning. This paper reviews convergent evidence from cognitive neuroscience of mental imagery, object cognition, and memory that supports a multi-state interactive (MUSI) account of automatic and strategic mental simulation mechanisms that can ground memory, including the meaning, of objects in modal processing of visual features

Is anterior N2 enhancement a reliable electrophysiological index of concealed information?

publisher: Elsevier articletitle: Is anterior N2 enhancement a reliable electrophysiological index of concealed information? journaltitle: NeuroImage articlelink: http://dx.doi.org/10.1016/j.neuroimage.2016.08.042 content_type: article copyright: © 2016 Elsevier Inc. All rights reserved

Top-down modulation of visual processing and knowledge after 250 ms supports object constancy of category decisions

People categorize objects slowly when visual input is highly impoverished instead of optimal. While bottom-up models may explain a decision with optimal input, perceptual hypothesis testing (PHT) theories implicate top-down processes with impoverished input. Brain mechanisms and the time course of PHT are largely unknown. This event-related potential study used a neuroimaging paradigm that implicated prefrontal cortex in top-down modulation of occipitotemporal cortex. Subjects categorized more impoverished and less impoverished real and pseudo objects. PHT theories predict larger impoverishment effects for real than pseudo objects because top-down processes modulate knowledge only for real objects, but different PHT variants predict different timing. Consistent with parietal-prefrontal PHT variants, around 250 ms, the earliest impoverished real object interaction started on an N3 complex, which reflects interactive cortical activity for object cognition. N3 impoverishment effects localized to both prefrontal and occipitotemporal cortex for real objects only. The N3 also showed knowledge effects by 230 ms that localized to occipitotemporal cortex. Later effects reflected (a) word meaning in temporal cortex during the N400, (b) internal evaluation of prior decision and memory processes and secondary higher-order memory involving anterotemporal parts of a default mode network during posterior positivity (P600), and (c) response related activity in posterior cingulate during an anterior slow wave (SW) after 700 ms. Finally, response activity in supplementary motor area during a posterior SW after 900 ms showed impoverishment effects that correlated with RTs. Convergent evidence from studies of vision, memory, and mental imagery which reflects purely top-down inputs, indicates that the N3 reflects the critical top-down processes of PHT. A hybrid multiple-state interactive, PHT and decision theory best explains the visual constancy of object cognition

The sensitive, open creator

Identifying a creative personality has been challenging. Sensitivity was implicated in creativity in early studies but more recently defined as a biologically-based personality dimension (i.e., temperament). In this paper we aim to establish relationships between temperament, personality and creative potential and achievement. This laboratory study with a large diverse sample used multiple recently established sensitivity and creativity measures while controlling negative-affect and Big-Five personality traits. Only sensitivity and openness correlate positively with three creativity measures and independently predict two (achievement, ideation). Openness predicts creative products and achievement more strongly as sensitivity rises above average, and conversely. Sensitivity and openness primarily determine diverse creative abilities and demonstrate vantage-sensitivity. Developmental environment interacting with neurosensitivity mechanisms (especially lower inhibition), and automatic attention may explain why sensitive, open people are more creative

Event-Related Potential Effects of Object Recognition depend on Attention and Part-Whole Configuration

The effects of spatial attention and part-whole configuration on recognition of repeated objects were investigated with behavioral and event-related potential (ERP) measures. Short-term repetition effects were measured for probe objects as a function of whether a preceding prime object was shown as an intact image or coarsely scrambled (split into two halves) and whether or not it had been attended during the prime display. In line with previous behavioral experiments, priming effects were observed from both intact and split primes for attended objects, but only from intact (repeated sameview) objects when they were unattended. These behavioral results were reflected in ERP waveforms at occipital–temporal locations as more negative-going deflections for repeated items in the time window between 220 and 300 ms after probe onset (N250r).Attended intact images showed generally more enhanced repetition effects than split ones. Unattended images showed repetition effects only when presented in an intact configuration, and this finding was limited to the right-hemisphere electrodes. Repetition effects in earlier (before 200 ms) time windows were limited to attended conditions at occipito-temporal sites during the N1, a component linked to the encoding of object structure, while repetition effects at central locations during the same time window (P150) were found for attended and unattended probes but only when repeated in the same intact configuration. The data indicate that view-generalization is mediated by a combination of analytic (part-based) representations and automatic view-dependent representations