Objectives: Most memories are consolidated during sleep, and this process is reflected by various post-learning sleep changes. However, little is known on sleep-dependent memory consolidation of spatial imagery abilities. Here we want to assess the effects on subsequent sleep of an intensive training at a spatial judgment task, and to look at possible improvements at awakening in both its egocentric and allocentric components. Methods: In 10 young subjects, a baseline 8 h sleep (BL) was compared to a post-training sleep (TR) preceded by an intensive training session at a spatial judgment pointing task. Subjects were asked to imagine themselves in any of the eight positions of a dial, and to indicate with a pointer what rotation was needed to reach a target object. The task was administered again at morning awakening. Results: At morning recall, memory performance was increased in TR, compared to BL, only in those positions (non parallel to the learning position) where the activation of allocentric processes was required. Relative to BL, sleep in TR showed a significant increase of SWS and sleep efficiency, and a trend to a reduction of functional uncertainty periods (intervals of EEG instability and frequent stage transitions). Conclusions: Imaginative memory performance seems to benefit from sleep only in its allocentric component, in agreement with recent evidence on motor sequence memories. Also, results suggest that pre-sleep intensive training at a spatial judgment task exerts positive effects on sleep continuity and stability, similar to what has been previously observed in declarative tasks

Sleep changes following a spatial judgment pointing task with egocentric and allocentric components / Albinni, Benedetta; Arzilli, Cinzia; Conte, Francesca; Giganti, Fiorenza; Mango, Daniele; Ruggiero, Gennaro; Ficca, Gianluca. - In: JOURNAL OF SLEEP RESEARCH. - ISSN 1365-2869. - ELETTRONICO. - 25:(2016), pp. 0-0.

Sleep changes following a spatial judgment pointing task with egocentric and allocentric components

ARZILLI, CINZIA;GIGANTI, FIORENZA;FICCA, GIANLUCA
2016

Abstract

Objectives: Most memories are consolidated during sleep, and this process is reflected by various post-learning sleep changes. However, little is known on sleep-dependent memory consolidation of spatial imagery abilities. Here we want to assess the effects on subsequent sleep of an intensive training at a spatial judgment task, and to look at possible improvements at awakening in both its egocentric and allocentric components. Methods: In 10 young subjects, a baseline 8 h sleep (BL) was compared to a post-training sleep (TR) preceded by an intensive training session at a spatial judgment pointing task. Subjects were asked to imagine themselves in any of the eight positions of a dial, and to indicate with a pointer what rotation was needed to reach a target object. The task was administered again at morning awakening. Results: At morning recall, memory performance was increased in TR, compared to BL, only in those positions (non parallel to the learning position) where the activation of allocentric processes was required. Relative to BL, sleep in TR showed a significant increase of SWS and sleep efficiency, and a trend to a reduction of functional uncertainty periods (intervals of EEG instability and frequent stage transitions). Conclusions: Imaginative memory performance seems to benefit from sleep only in its allocentric component, in agreement with recent evidence on motor sequence memories. Also, results suggest that pre-sleep intensive training at a spatial judgment task exerts positive effects on sleep continuity and stability, similar to what has been previously observed in declarative tasks
2016
Albinni, Benedetta; Arzilli, Cinzia; Conte, Francesca; Giganti, Fiorenza; Mango, Daniele; Ruggiero, Gennaro; Ficca, Gianluca
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1089119
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