Telephone-delivered cognitive-behavioral therapy for pain management among older military veterans: a randomized trial.

This study investigated the effectiveness of telephone-delivered cognitive-behavioral therapy (T-CBT) in the management of chronic pain with older military veterans enrolled in VA primary-care clinics. We conducted a randomized clinical trial comparing T-CBT with telephone-delivered pain education (T-EDU). A total of 98 military veterans with chronic pain were enrolled in the study and randomized into one of two treatment conditions. Study participants were recruited from primary-care clinics at an urban VA medical center and affiliated VA community-based outpatient clinics (CBOCs). Pain management outcomes were measured at midtreatment (10 weeks), posttreatment (20 weeks), 3-month follow-up (32 weeks), and 6-month follow-up (46 weeks). No significant differences were found between the two treatment groups on any of the outcome measures. Both treatment groups reported small but significant increases in level of physical and mental health, and reductions in pain and depressive symptoms. Improvements in all primary outcome measures were mediated by reductions in catastrophizing. Telephone-delivered CBT and EDU warrant further study as easily accessible interventions for rural-living older individuals with chronic pain.

Scene recognition without identification.

Recognition without identification (RWI) is old-new discrimination among recognition test items that go unidentified. Recently, the effect has been shown in situations that require pre-experimental connections between unidentified studied items and their test cues, such as when the test cues are general knowledge questions and the unidentified studied items are their answers, or when the test cues are pictures of celebrities and the unidentified studied items are their names. In these cases, RWI demonstrates a peculiar relationship with tip-of-the-tongue (TOT) experiences: Participants give higher recognition ratings when in a TOT state than when not, even though studying an item does not increase the probability of a TOT state for that item. The present study extends these findings to the recognition of scene information. We demonstrate a scene RWI effect with scenes when scene names cannot be retrieved, and replicate the previously reported relationship between TOT states and RWI. In addition, we show that the relationship between RWI and reported TOT states also occurs between RWI and reported déjà vu states with the test scenes.

Form-function analysis of the effect of canopy morphology on leaf self-shading in the seagrass Thalassia testudinum.

The variation in seagrass morphology and the magnitude of leaf self-shading within the canopy of Thalassia testudinum, were compared among nine sites in a fringing reef lagoon. We found a significant variation in the growth-form of T. testudinum reflected in a 5.4-fold variation in the attenuation coefficient (K (d)) within the canopy. The largest morphological variation was observed in shoot density. Leaf biomass, leaf area index (LAI), and shoot density were positively associated with canopy-K (d) and with the percentage of surface irradiance received by the top of the seagrass canopy (% Es). These results provide an explanation for the consistent pattern of depth reduction in seagrass leaf biomass and shoot density reported in the literature. Shoot density and shoot size are two descriptors of the growth-form of T. testudinum related to its clonal life-form. Shoot size was not significantly correlated with canopy-K (d), nevertheless, it showed a significant effect on the slope of the relationship between shoot density and canopy-K (d). According to this model, shoot size also contributes to light attenuation within the seagrass canopy by increasing the effect of shoot density. This form-function analysis suggests that light may have a relevant role in the regulation of the optimal plant balance between horizontal (variation in shoot density) and vertical (variation in shoot size) growth of seagrasses. Other environmental factors and interactions also need to be examined to fully understand the mechanistic bases of the morphological responses of seagrasses to the environment.