TY - JOUR
T1 - Lateralised sleep spindles relate to false memory generation
AU - SHAW, JOHN
AU - Monaghan, Padraic
PY - 2017/12/31
Y1 - 2017/12/31
N2 - Sleep is known to enhance false memories: After presenting participants with lists of semantically related words, sleeping before recalling these words results in a greater acceptance of unseen “lure” words related in theme to previously seen words. Furthermore, the right hemisphere (RH) seems to be more prone to false memories than the left hemisphere (LH). In the current study, we investigated the sleep architecture associated with these false memory and lateralisation effects in a nap study. Participants viewed lists of related words, then stayed awake or slept for approximately 90 min, and were then tested for recognition of previously seen-old, unseen-new, or unseen-lure words presented either to the LH or RH. Sleep increased acceptance of unseen-lure words as previously seen compared to the wake group, particularly for RH presentations of word lists. RH lateralised stage 2 sleep spindle density relative to the LH correlated with this increase in false memories, suggesting that RH sleep spindles enhanced false memories in the RH.
AB - Sleep is known to enhance false memories: After presenting participants with lists of semantically related words, sleeping before recalling these words results in a greater acceptance of unseen “lure” words related in theme to previously seen words. Furthermore, the right hemisphere (RH) seems to be more prone to false memories than the left hemisphere (LH). In the current study, we investigated the sleep architecture associated with these false memory and lateralisation effects in a nap study. Participants viewed lists of related words, then stayed awake or slept for approximately 90 min, and were then tested for recognition of previously seen-old, unseen-new, or unseen-lure words presented either to the LH or RH. Sleep increased acceptance of unseen-lure words as previously seen compared to the wake group, particularly for RH presentations of word lists. RH lateralised stage 2 sleep spindle density relative to the LH correlated with this increase in false memories, suggesting that RH sleep spindles enhanced false memories in the RH.
KW - False memory
KW - Hemispheric lateralisation
KW - Memory
KW - Sleep consolidation
KW - Sleep spindles
UR - http://dx.doi.org/10.1016/j.neuropsychologia.2017.11.002
UR - http://www.scopus.com/inward/record.url?scp=85034066456&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85034066456&partnerID=8YFLogxK
U2 - 10.1016/j.neuropsychologia.2017.11.002
DO - 10.1016/j.neuropsychologia.2017.11.002
M3 - Article (journal)
SN - 0028-3932
VL - 107
SP - 60
EP - 67
JO - Neuropsychologia
JF - Neuropsychologia
ER -