Memory

411.

Functional topography of a distributed neural system for spatial and nonspatial information maintenance in working memory.

We investigated the degree to which the distributed and overlapping patterns of activity for working memory (WM) maintenance of objects and spatial locations are functionally dissociable. Previous studies of the neural system responsible for maintenance ...
Joseph B Sala, Pia Rämä, Susan M Courtney (Neuropsychologia, 2003)
functional-topography-distributed-neural-system-spatial-nonspatial.asp

412.

Neural systems underlying lexical retrieval for sign language.

Positron emission tomography was used to investigate whether signed languages exhibit the same neural organization for lexical retrieval within classical and non-classical language areas as has been described for spoken English. Ten deaf native American ...
Karen Emmorey, Thomas Grabowski, Stephen McCullough, Hanna Damasio, Laura L B Ponto, Richard D Hichwa, Ursula Bellugi (Neuropsychologia, 2003)
neural-systems-underlying-lexical-retrieval-sign-language.asp

413.

Attention-related activity during episodic memory retrieval: a cross-function fMRI study.

In functional neuroimaging studies of episodic retrieval (ER), activations in prefrontal, parietal, anterior cingulate, and thalamic regions are typically attributed to episodic retrieval processes. However, these activations are also frequent during ...
Roberto Cabeza, Florin Dolcos, Steven E Prince, Heather J Rice, Daniel H Weissman, Lars Nyberg (Neuropsychologia, 2003)
attention-related-activity-episodic-memory-retrieval-cross-function.asp

414.

Neural response suppression, haemodynamic repetition effects, and behavioural priming.

Repeated stimulus processing is often associated with a reduction in neural activity, as measured by single-cell recording or by haemodynamic imaging techniques like PET and fMRI. These reductions are sometimes linked to the behavioural phenomenon of ...
R N A Henson, M D Rugg (Neuropsychologia, 2003)
neural-response-suppression-haemodynamic-repetition-effects.asp

415.

Mapping of the neuronal networks of human cortical brain functions.

OBJECTIVE: The principles and methodology of event-related fMRI, electromagnetic source imaging and intracranial evoked potentials will be described along with some examples of the mapping of the neuronal networks of human cortical brain functions with ...
S Momjian, M Seghier, M Seeck, C M Michel (Adv Tech Stand Neurosurg, 2003)
mapping-neuronal-networks-human-cortical-brain-functions.asp

416.

Common prefrontal activations during working memory, episodic memory, and semantic memory.

Regions of the prefrontal cortex (PFC) are typically activated in many different cognitive functions. In most studies, the focus has been on the role of specific PFC regions in specific cognitive domains, but more recently similarities in PFC activations ...
Lars Nyberg, Petter Marklund, Jonas Persson, Roberto Cabeza, Christian Forkstam, Karl Magnus Petersson, Martin Ingvar (Neuropsychologia, 2003)
common-prefrontal-activations-working-memory-episodic-memory-semantic.asp

417.

Regional analysis of hippocampal activation during memory encoding and retrieval: fMRI study.

Investigators have recently begun to examine the differential role of subregions of the hippocampus in episodic memory. Two distinct models have gained prominence in the field. One model, outlined by Moser and Moser (Hippocampus 1998;8:608-619), based ...
Michael D Greicius, Ben Krasnow, Jesse M Boyett-Anderson, Stephan Eliez, Alan F Schatzberg, Allan L Reiss, Vinod Menon (Hippocampus, 2003)
regional-analysis-hippocampal-activation-memory-encoding-retrieval.asp

418.

Prefrontal activity associated with working memory and episodic long-term memory.

Many recent neuroimaging studies have highlighted the role of prefrontal regions in the sustained maintenance and manipulation of information over short delays, or working memory (WM). In addition, neuroimaging findings have highlighted the role of ...
Charan Ranganath, Marcia K Johnson, Mark DEsposito (Neuropsychologia, 2003)
prefrontal-activity-associated-working-memory-episodic-long-term.asp

419.

Possible role of intramembrane receptor-receptor interactions in memory and learning via formation of long-lived heteromeric complexes: focus on motor learning in the basal ganglia.

Learning in neuronal networks occurs by instructions to the neurons to change their synaptic weights (i.e., efficacies). According to the present model a molecular mechanism that can contribute to change synaptic weights may be represented by multiple ...
L F Agnati, O Franzen, S Ferré, G Leo, R Franco, K Fuxe (J Neural Transm Suppl, 2003)
possible-role-intramembrane-receptor-receptor-interactions-memory.asp

420.

The role of the rostral frontal cortex (area 10) in prospective memory: a lateral versus medial dissociation.

Using the H(2)(15)O PET method, we investigated whether previous findings of regional cerebral blood flow (rCBF) changes in the polar and superior rostral aspects of the frontal lobes (principally Brodmanns area (BA) 10) during prospective memory (PM) ...
Paul W Burgess, Sophie K Scott, Christopher D Frith (Neuropsychologia, 2003)
role-rostral-frontal-cortex-area--prospective-memory-lateral-versus.asp