This also prevents oxidation of the W TE at the TaO x /W interface owing to the migration of oxygen from the underlying films toward the Ti film, which contributes to the improved resistive switching memory performance as described below.
Due to the presence of significant sex effects in the previous analyses and because gender-specific variation in memory performance have been described in the literature the same regression analyses were conducted in sub-samples stratified by sex.
This also prevents oxidation of the W TE at the TaO x /W interface of device S1 owing to the migration of oxygen from the underlying films towards the Ti film, which contributes to the improved resistive switching memory performance as will be described.
In order to correlate behavioral performance with fMRI responses (see below), two behavioral indices were used to describe memory performance.
It may very well be that the memory performance of 129P2 mice described in this study is the result of their disability in habituating to the test situation.
As previously discussed, one characteristic of infants' memory performance on the tasks described earlier is that it appears to be highly specific and inflexible (Hayne, 2004, principle 3 above), and hence incompatible with the above characterisation of episodic memory.
The excellent memory performance of elephants was also described in a different study.
Despite reports that 192IgG-saporin-induced cholinergic loss leads to post-operative impairments in acquisition and performance of spatial memory tasks, a number of other reports have described intact spatial memory performance following these lesions.
More recently, however, widespread cognitive deficits have been described with variable memory performance between patients despite a homogenous clinical presentation (Helmstaedter et al., 2003; Elger et al., 2004).
For ease of exposition, we describe the decline in memory performance over time as ' decay' though we acknowledge here that it might be the result of a more active process of interference (see, e.g., [25]).
