Abstract：
:Recent findings suggest that constructed experience, the ability to envision future events, activates the same cortical network as recollection of past events. For example, damage to one key area, the hippocampus, impairs patients' ability to remember the past and to imagine novel experiences (Hassabis, Kumaran, Vann, & Maguire, 2007). Here, we investigated whether damage to two other areas, posterior parietal cortex and prefrontal cortex, also impairs this ability. Patients with bilateral posterior parietal lesions or unilateral prefrontal lesions were tested in their ability to describe imaginary future events. Only parietal patients were impaired at freely describing autobiographical memories, but both patient groups were impaired when elaborating constructed experiences. This dissociation suggests that parietal and prefrontal structures are differentially involved in constructed experience. Current tasks may impose overly broad cognitive demands making it impossible to specify the deficient cognitive component in any patient group. These findings provide additional constraints regarding the mechanistic role of the parietal cortex in memory.
journal_name
Neuropsychologiajournal_title
Neuropsychologiaauthors
Berryhill ME,Picasso L,Arnold R,Drowos D,Olson IRdoi
10.1016/j.neuropsychologia.2010.01.004subject
Has Abstractpub_date
2010-04-01 00:00:00pages
1385-93issue
5eissn
0028-3932issn
1873-3514pii
S0028-3932(10)00005-9journal_volume
48pub_type
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