Mental representation of knowledge following frontal-lobe or postrolandic lesions

Godbout, Lucie; Doyon, Julien

doi:10.1016/0028-3932(95)00047-x

Cited by 52 publications

(55 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The nature of this knowledge is not clearly specified but may correspond to the actions that are central to-or distinctive of-a particular script (Sirigu et al, 1995). However, results to date suggest that patients with focal lesions of the left temporal cortex have no impairment on the semantic dimension of script representations (Armus, Brookshire, & Nicholas, 1989;Godbout & Doyon, 1995;Lojek-Osiejuk, 1996;Sirigu et al, 1995). Another hypothesis is that script content and organization, such as the temporal ordering of the sub-actions of a script, are represented in the prefrontal cortex (Grafman, 2002;Krueger et al, 2009).…”

Section: Introductionmentioning

confidence: 92%

The Impact of Semantic Dementia on Everyday Actions: Evidence from an Ecological Study

Bier

Bottari

Hudon

et al. 2012

J Int Neuropsychol Soc

View full text Add to dashboard Cite

In theory, semantic memory may trigger and support the execution of everyday activities. This study explored this question by comparing three patients with semantic dementia to 40 normal controls performing different everyday activities. Participants were tested in their home using the Instrumental Activities of Daily Living Profile, an ecological measure of everyday functioning. Participants were informed that they had unknowingly invited two guests for lunch and should prepare accordingly. With these instructions, they dress to go outdoors, go to the grocery store, shop for food, prepare a hot meal, have the meal with the guests, and clean up after the meal. Performance was analyzed on the basis of four operations related to problem solving: formulate a goal, plan, execute, and verify attainment of the goal. Results indicate that compared to normal controls, two patients had significant difficulties and needed assistance with all operations of problem-solving, particularly while preparing a meal and cleaning up after the meal. One patient showed no difficulties despite severe semantic deficits. These results suggest that semantic deficits alone cannot explain the difficulties observed, but may contribute to some aspects of everyday actions such as those involved in everyday problem-solving.

show abstract

Section: Introductionmentioning

confidence: 92%

The Impact of Semantic Dementia on Everyday Actions: Evidence from an Ecological Study

Bier

Bottari

Hudon

et al. 2012

J Int Neuropsychol Soc

View full text Add to dashboard Cite

show abstract

“…The script generation task administered here, which was adapted from Godbout and Doyon (1995), has been described elsewhere (St-Laurent et al, 2009). Participants were tested on this task after completing the AI.…”

Section: Script Generationmentioning

confidence: 99%

“…Sequencing errors (action not reported in the order in which it usually occurs during the activity), irrelevant intrusions (action that did not belong to the script), and perseveration errors (action repeated within the script) (Godbout and Doyon, 1995) were also tabulated. Perseveration errors were not counted as actions.…”

Section: Script Generationmentioning

confidence: 99%

See 1 more Smart Citation

The temporal unraveling of autobiographical memory narratives in patients with temporal lobe epilepsy or excisions

et al. 2011

View full text Add to dashboard Cite

Medial temporal lobe epilepsy (TLE), a condition known to affect the integrity and function of medial temporal lobe structures such as the hippocampus, has been shown to disrupt memory for real-life episodes. Here, patients with unilateral TLE, patients who received a unilateral temporal lobe resection to cure TLE, and healthy controls produced free narratives of autobiographical memories (AMs). To assess temporal resolution, narratives were segmented into bits of information, or details, which were classified according to how precisely they could be located within the time course of the AM. Categories included details corresponding to the entire AM, to parts or subevents within the AM, and to actions taking place within seconds to minutes. The number of details per category was tallied and compared between patients and controls. Temporal order was assessed by determining the correct (internally consistent) chronological order of the sequence of events within the narrative. Results indicate that while patients' memory for the parts or subevents of personal episodes was intact, as was their temporal order, their memory for the minute-by-minute unraveling of the episode was impaired. We believe this loss of temporally specific details may contribute to the reduced vividness of AM recollection in TLE patients. Our findings provide further evidence that patients with hippocampal damage retrieve skeletal AMs for which the gist of the memory is maintained, but the specific details are lost.

show abstract

“…Other authors (Godbout & Doyon, 1995;Sirigu, Zalla, Pillon, Grafman, Agid, & Dubois, 1995 provided evidence that the frontal lobes may play a significant role in script information processing. In a script generation task, in a manner similar to a word fluency test, Sirigu et al (1995) asked 9 frontal patients to generate the actions necessary to reach the goal of different activities ranging in degree of familiarity (routine: 'Preparing to go to work'; non-routine 'Taking a trip to Mexico'; novel: 'Opening a beauty salon').…”

mentioning

confidence: 98%

Mental Representation of Knowledge Following Frontal-Lobe Lesion: Dissociations on Tasks Using Scripts

Allain¹,

D²,

Etcharry-Bouyx³

et al. 1999

Journal of Clinical and Experimental Neuropsychology

View full text Add to dashboard Cite

Twenty-three frontal-brain-damaged subjects, 10 posterior-brain-damaged subjects and 10 normal controls were compared on script tasks. They were first asked to re-establish the sequential and hierarchical structure of 2 script actions, and then, they were asked to order 2 new scripts which contained aberrant items. Impairments in script information processing were observed only in frontal patients. Of the 23 frontal patient tested 8 made errors in ordering actions, in choosing scenes and in making estimates of action importance in the first task, and they rejected the aberrant elements in the second task. Eleven frontal subjects performed as well as the control subjects in the first task, but used the irrelevant items. The last 4 frontal patients performed as well as the control subjects in both tasks. These results support a possible fractionation of the frontal lobe syndrome.

show abstract

Mental representation of knowledge following frontal-lobe or postrolandic lesions

Cited by 52 publications

References 43 publications

The Impact of Semantic Dementia on Everyday Actions: Evidence from an Ecological Study

The Impact of Semantic Dementia on Everyday Actions: Evidence from an Ecological Study

The temporal unraveling of autobiographical memory narratives in patients with temporal lobe epilepsy or excisions

Mental Representation of Knowledge Following Frontal-Lobe Lesion: Dissociations on Tasks Using Scripts

Contact Info

Product

Resources

About