The right parahippocampal gyrus contributes to the formation and maintenance of bound information in working memory

Luck, David; Danion, Jean-Marie; Marrer, Corrine; Pham, Bich‐Thuy; Gounot, Daniel; Foucher, Jack

doi:10.1016/j.bandc.2009.09.009

Cited by 95 publications

(62 citation statements)

References 61 publications

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“…Despite the fact that the processing of the spatial feature occurred in an involuntary manner, the pattern of brain activation was very similar to that observed in previous studies in which participants attended to, and intended to maintain, both verbal and spatial features (Campo et al, 2005Luck et al, 2010;Prabhakaran et al, 2000;Wu et al, 2007). This similarity is intriguing considering evidence from neuroimaging studies establishing distinct neuroanatomical substrates for controlled and incidental memory (Chiu et al, 2006;Dove, Manly, Epstein, & Owen, 2008;Fletcher et al, 2001;Lekeu et al, 2002;Noldy, Stelmack, & Campbell, 1990;Reber, Gitelman, Parrish, & Mesulam, 2003;Reber et al, 2002;Rugg, Fletcher, Frith, Frackowiak, & Dolan, 1997;Rugg et al, 1998;Russeler, Hennighausen, Munte, & Rosier, 2003;Schott, Richardson-Klavehn, Heinze, & Duzel, 2002;Schott et al, 2005).…”

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confidence: 78%

“…Recently, several behavioural studies have begun to investigate the mechanisms underpinning verbal-spatial binding (Cowan, Saults, & Morey, 2006;Luck, Foucher, Offerlin-Meyer, Lepage, & Danion, 2008;Mitroff & Alvarez, 2007;Morey, 2009;Oberauer & Vockenberg, 2009). The neural bases of this type of binding have also been investigated by means of functional magnetic resonance imaging (fMRI) and magneto/electroencephalography (MEG/EEG) (Campo et al, 2005(Campo et al, , 2010Luck et al, 2010;Prabhakaran, Narayanan, Zhao, & Gabrieli, 2000;Wu, Chen, Li, Han, & Zhang, 2007). All of these studies used modified versions of the single probe change-detection task developed by Prabhakaran et al (2000), in which participants were asked to maintain both verbal (either letters or words) and spatial (locations) information presented either in an integrated (bound condition) or in an unintegrated fashion (separate condition).…”

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confidence: 99%

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Explicit processing of verbal and spatial features during letter-location binding modulates oscillatory activity of a fronto-parietal network

et al. 2010

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Keywords: Binding Working memory Episodic buffer Oscillatory activity Prefrontal cortex MagnetoencephalographyThe present study investigated the binding of verbal and spatial features in immediate memory. In a recent study, we demonstrated incidental and asymmetrical letter-location binding effects when participants attended to letter features (but not when they attended to location features) that were associated with greater oscillatory activity over prefrontal and posterior regions during the retention period. We were interested to investigate whether the patterns of brain activity associated with the incidental binding of letters and locations observed when only the verbal feature is attended differ from those reflecting the binding resulting from the controlled/explicit processing of both verbal and spatial features. To achieve this, neural activity was recorded using magnetoencephalography (MEG) while participants performed two working memory tasks. Both tasks were identical in terms of their perceptual characteristics and only differed with respect to the task instructions. One of the tasks required participants to process both letters and locations. In the other, participants were instructed to memorize only the letters, regardless of their location. Time-frequency representation of MEG data based on the wavelet transform of the signals was calculated on a single trial basis during the maintenance period of both tasks. Critically, despite equivalent behavioural binding effects in both tasks, single and dual feature encoding relied on different neuroanatomical and neural oscillatory correlates. We propose that enhanced activation of an anterior-posterior dorsal network observed in the task requiring the processing of both features reflects the necessity for allocating greater resources to intentionally process verbal and spatial features in this task.The capacity to maintain and manipulate information in working memory (WM) is critical to higher cognitive functions. Despite its crucial role in a number of mental skills and abilities, WM capacity is surprisingly limited. Through the integration of individual features into "objects", however, we are capable of processing larger amounts of information. Indeed, recent experimentation suggests the limit of WM capacity to be set at around three to four bound "objects" (Cowan, 2001;Todd & Marois, 2004;Vogel, Woodman, & Luck, 2001). The ability to integrate information involves "the reorganization of bits of information to create more complex but unified representations of previously distributed information" (Wheeler & Treisman, 2002), a phenomenon idenCorresponding author. Tel.: +34 91 549 57 00; fax: +34 91 336 68 28. E-mail addresses: Pcampo@arrakis.es, pcampo@med.ucm.es (P. Campo). These authors contributed equally to the study. tified in the memory literature as 'chunking' (Baddeley, 2000;Ericsson, Chase, & Faloon, 1980;Miller, 1956;Simon, 1974). In visual WM, the integration of different stimulus features into more complex representations or objects...

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confidence: 78%

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confidence: 99%

Explicit processing of verbal and spatial features during letter-location binding modulates oscillatory activity of a fronto-parietal network

et al. 2010

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“…In line with this, Schon et al (2004; see also Axmacher, Schmitz, Weinreich, Elger, & Fell, 2008) demonstrated that MTL involvement in working memory predicts later long-term memory formation. More recently, Piekema and colleagues failed to observe increased MTL activation in face-location binding (Piekema, Rijpkema, Fern ‡ndez, & Kessels, 2010), instead identifying parietal and prefrontal areas as being critical (though see Luck et al, 2010). Jeneson and Squire (2012) have recently developed further the argument that evidence for a hippocampal contribution to binding in working memory may actually reflect LTM involvement.…”

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confidence: 99%

“…For example, Prabhakaran, Narayanan, Zhao, and Gabrieli (2000) identified PFC area right BA10 as being particularly active during binding of letters to locations (see also Campo et al, 2005;Mitchell et al, 2000). However, several studies have failed to support this (Campo et al, 2008;Luck et al, 2010;Owen, 2004;Piekema et al, 2006;Todd & Marois, 2004), though these studies may again have emphasized LTM over working memory. Another possibility is that parietal regions are key for binding within working memory (e.g.…”

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confidence: 99%

Item-location binding in working memory: Is it hippocampus-dependent?

2014

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A general consensus is emerging that the hippocampus has an important and active role in the creation of new long-term memory representations of associations or bindings between elements. However, it is less clear whether this contribution can be extended to the creation of temporary bound representations in working memory, involving the retention of small numbers of items over short delays. We examined this by administering a series of recognition and recall tests of working memory for color-location binding and object-location binding to a patient with highly selective hippocampal damage (Jon), and groups of control participants. Jon achieved high levels of accuracy in all working memory tests of recognition and recall binding across retention intervals of up to 10s. In contrast, Jon performed at chance on an unexpected delayed test of the same object-location binding information. These findings indicate a clear dissociation between working memory and long-term memory, with no evidence for a critical hippocampal contribution to item-location binding in working memory.

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“…More recent studies suggest that this region responds more to associative processing, such as object-location associations [19] and contextual associations [20]. Furthermore, studies focusing on binding information showed that during binding information with associations compared with non-binding information, the PHG was more activated [21]. The posterior portion of the PHG is more involved in spatial contexts, whereas the anterior PHG is more involved in nonspatial contexts [22].…”

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confidence: 99%

Recruitment of the ventral and dorsal streams in statistical graph comprehension: An fMRI study

Zhong

2015

THC

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Abstract. BACKGROUND: Although many previous studies have focused on statistical graph comprehension in cognitive psychology, there is no consensus among them. OBJECTIVE: Brain neuroimaging studies on the statistical graph comprehension are useful to account for the cognitive mechanism of interpreting statistical graphic information. METHODS: The present study used two experimental conditions, a statistical graph (SG) and a statistical graph with text (SGT), and one control condition, a text (ST), where the ST task was a verbal description of the information from the SG, and when the SGT is a mixed graph + textual description. We used fMRI to investigate the brain activity of 36 normal subjects while they passively viewed the statistical information presented in visual forms as SG, ST or SGT. RESULTS:The results showed that compared with the control tasks, both SG and SGT consistently activated ventral and dorsal streams and that compared with SGT, SG significantly activated the ventral stream but not the dorsal stream. CONCLUSIONS: These results suggest that the portions of the ventral and dorsal streams related to object recognition are commonly involved in statistical graph comprehension. These findings provide neuroimaging evidence for the cognitive processing of statistical graphs.

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The right parahippocampal gyrus contributes to the formation and maintenance of bound information in working memory

Cited by 95 publications

References 61 publications

Explicit processing of verbal and spatial features during letter-location binding modulates oscillatory activity of a fronto-parietal network

Explicit processing of verbal and spatial features during letter-location binding modulates oscillatory activity of a fronto-parietal network

Item-location binding in working memory: Is it hippocampus-dependent?

Recruitment of the ventral and dorsal streams in statistical graph comprehension: An fMRI study

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