An fMRI study of long-term everyday memory using SenseCam

We used a novel automatic camera, SenseCam, to investigate recognition memory for real-life events at a 5-month retention interval. Using fMRI we assessed recollection and familiarity memory using the remember/know procedure. Recollection evoked no medial temporal lobe (MTL) activation compared to familiarity and new responses. Instead, recollection activated diverse regions in neocortex including medial prefrontal cortex. We observed decreased activation in anterior hippocampus/ anterior parahippocampal gyrus (aPHG) at 5 months compared to a 36-hour retention interval. Familiarity was associated with greater activation in aPHG and posterior parahippocampal gyrus (pPHG) than recollection and new responses. Familiarity activation decreased over time in anterior hippocampus/aPHG and posterior hippocampus/pPHG. The engagement of neocortical regions such as medial prefrontal cortex at a 5-month delay, together with the reduced MTL activation at 5 months relative to at 36 hours is in line with the assumptions of Consolidation theory. SenseCam provides a valuable technique for assessing the processes that underlie remote everyday recognition memory.     

The neural correlates of everyday recognition memory

We used a novel automatic camera, SenseCam, to create a recognition memory test for real-life events. Adapting a 'Remember/Know' paradigm, we asked healthy undergraduates, who wore SenseCam for 2 days, in their everyday environments, to classify images as strongly or weakly remembered, strongly or weakly familiar or novel, while brain activation was recorded with functional MRI. Overlapping, widely distributed sets of brain regions were activated by recollected and familiar stimuli. Within the medial temporal lobes, 'Remember' responses specifically elicited greater activity in the right anterior and posterior parahippocampal gyrus than 'Know' responses. 'New' responses activated anterior parahippocampal regions. A parametric analysis, across correctly recognised items, revealed increasing activation in the right hippocampus and posterior parahippocampal gyrus (pPHG). This may reflect modulation of these regions by the degree of recollection or, alternatively, by increasing memory strength. Strong recollection elicited greater activity in the left posterior hippocampus/pPHG than weak recollection indicating that this region is specifically modulated by the degree of recollection.     

Maternal Incarceration,Children’s Psychological Adjustment,and the Mediating Role of Emotion Regulation

Children who live in the context of maternal incarceration (MI) are exposed to both general environmental risk and incarceration-specific risk increasing the probability of their developing externalizing and internalizing behaviors problems. Little research has examined the socio-emotional mechanisms that account for the psychological effects of MI. This research examined children’s anger and sadness regulation as mediators between environmental and incarceration-specific risk and psychological functioning. Participants were 117 children (60% Black; 52% boys; M age = 9.85 years, SD = 1.65 years), their incarcerated mother, and current caregiver. All informants completed questionnaires assessing children’s anger and sadness regulation as well as externalizing and internalizing behaviors. Mothers and caregivers provided information concerning children’s exposure to environmental risk and all three reporters provided information on incarceration-specific risk experiences (ISRE). Structural equation modeling was used to test indirect effects of risk variables (ISRE, environmental) on psychological functioning (externalizing, internalizing behaviors) via emotion regulation (anger, sadness). Gender, age, and race were covariates. The analyses revealed significant indirect effects of incarceration-specific risk on both externalizing and internalizing behavior problems via anger regulation but not via sadness regulation. The findings highlight the centrality of emotion regulation as a mechanism that helps explain the negative psychological outcomes experienced by children exposed to ISRE with implications for preventive interventions.     

Minimal Disagreement

Philosophia - In the recent debate about the semantics of perspectival expressions (predicates of taste, aesthetic adjectives, moral terms, epistemic modals, epistemic terms etc.), disagreement has...     

The philosophy of science in Eastern Europe a concise survey

Journal for General Philosophy of Science - An introductory article, giving first a short historical exposition of philosophical thinking in Russia and Czechoslovakia. Second, basic trends in the...     

The causes and consequences of transient epileptic amnesia

Transient epileptic amnesia (TEA) is a recently recognised syndrome of epilepsy in which the principle manifestation of seizures is recurrent episodes of isolated memory loss. In this article, we describe the clinical and cognitive profile of this emerging syndrome, and present new data that provide at most weak support for its proposed relationship to cerebrovascular disease. TEA is often associated with two unusual forms of interictal memory impairment: accelerated long-term forgetting and remote memory impairment. We discuss the clinical and theoretical implications of these relatively novel cognitive deficits.     

Factor analytic evaluation of differences between black and caucasian emotionally disturbed children on the children's depression inventory

Scores on the Children's Depression Inventory (CDI) for 392 Caucasian and 159 black psychiatric inpatients between 6 and 18 years of age were subjected to principal-components factor extraction with Varimax rotation. Factors not contributing to variance were eliminated using the scree test (Cattell, 1966) and the degree of variance accounted for by remaining factors for both groups was examined through respective squared multiple correlations. A comparison of CDI factors for blacks and Caucasians indicated some differences, with blacks be ing less suicidal yet higher on other behavioral dimensions, such as oppositionality, and Caucasians higher on affective dimensions, such as sadness. The results support research on black-Caucasian differences and suggest the need to validate further the CDI with minority populations.     

Reliability of the Children's Attitudes Toward the Environment Scale

The Children's Attitudes toward the Environment Scale, developed by Musser and Malkus (1994), gave Cronbach alpha .73 and .83 at pretest and 3-wk. later for 274 children and a test-retest r of only .47. While Cronbach alpha was similar to the value reported by the test developers, it is close to the low end of acceptability.