2017
DOI: 10.1016/j.dcn.2017.10.006
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Intact perceptual ability, but impaired familiarity judgment, after neonatal perirhinal lesions in rhesus macaques

Abstract: The perirhinal cortex is known to support high-level perceptual abilities as well as familiarity judgments that may affect recognition memory. We tested whether poor perceptual abilities or a loss of familiarity judgment contributed to the recognition memory impairments reported earlier in monkeys with PRh lesions received in infancy (Neo-PRh) (Weiss & Bachevalier, 2016; Zeamer et al., 2015). Perceptual abilities were assessed using a version of the Visual Paired Comparison task with black&white (B&W) stimuli,… Show more

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Cited by 6 publications
(6 citation statements)
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“…Interestingly, activity in that area only increased for statements that were presented to the participant before being scanned (and thus repeated) but not for new ones (Wang, Brashier, Wing, Marsh, & Cabeza, 2016). Intriguingly, rhesus macaques lesioned in this same area (the perirhinal cortex) exhibit familiarity judgment deficits, requiring more exposure to objects before they are able to judge them as familiar compared to control animals (Weiss, Guo, Richardson, & Bachevalier, 2017). In both cases (illusory truth effect and the here reported behavioral shift) the subject is unaware that repeated exposure leads to the strengthening of an unproven concept (reliability of statements in humans, and decision strategy in monkeys).…”
Section: Discussionmentioning
confidence: 99%
“…Interestingly, activity in that area only increased for statements that were presented to the participant before being scanned (and thus repeated) but not for new ones (Wang, Brashier, Wing, Marsh, & Cabeza, 2016). Intriguingly, rhesus macaques lesioned in this same area (the perirhinal cortex) exhibit familiarity judgment deficits, requiring more exposure to objects before they are able to judge them as familiar compared to control animals (Weiss, Guo, Richardson, & Bachevalier, 2017). In both cases (illusory truth effect and the here reported behavioral shift) the subject is unaware that repeated exposure leads to the strengthening of an unproven concept (reliability of statements in humans, and decision strategy in monkeys).…”
Section: Discussionmentioning
confidence: 99%
“…Interestingly, activity in that area only increased for statements that were presented to the participant before being scanned (and thus repeated) but not for new ones (Wang et al, 2016). Intriguingly, rhesus macaques lesioned in this same area (the perirhinal cortex) exhibit familiarity judgment deficits, requiring more exposure to objects before they are able to judge them as familiar compared to control animals (Weiss et al, 2017). In both cases (illusory truth effect and the here reported behavioral shift) the subject is unaware that repeated exposure leads to the strengthening of an unproven concept (reliability of statements in humans, and decision strategy in monkeys).…”
Section: Discussionmentioning
confidence: 99%
“…Figure 1 shows pre-surgical and post-surgical MR images of a representative case (Neo-PRh-6). Images from additional cases have been previously published (Zeamer et al, 2015; Weiss and Bachevalier, 2016; Weiss et al, 2016, 2017; Ahlgrim et al, 2017).…”
Section: Methodsmentioning
confidence: 99%
“…Arrows point to the rhinal sulcus (left column) and to areas of hypersignal (right column). See Zeamer et al (2015), Weiss and Bachevalier (2016), Weiss et al (2016, 2017), and Ahlgrim et al (2017) for illustration of lesion extent for additional Neo-PRh cases.…”
Section: Methodsmentioning
confidence: 99%
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