Image transformation dissociated from visuospatial working memory

Morton, Nick; Morris, Robin G.

doi:10.1080/02643299508251401

Cited by 34 publications

(28 citation statements)

References 36 publications

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“…Our failure to obtain evidence that the left superior parietal lobe plays an essential role in mental rotation is somewhat surprising given that many functional imaging studies and some studies of patients with brain lesions have found evidence for left parietal lobe involvement in mental rotation tasks (e.g., Jordan et al, 2001;Vingerhoets et al, 2001;Carpenter et al, 1999;Alivisatos & Petrides, 1997;Cohen et al, 1996;Morton & Morris, 1995;Mehta & Newcombe, 1991). By comparing our findings to studies of brain-lesioned patients, we might conclude that larger lesions, encompassing areas outside that stimulated in the present study, can cause mental rotation deficits.…”

Section: Discussionmentioning

confidence: 76%

Parietal Lobe Contribution to Mental Rotation Demonstrated with rTMS

Harris

Miniussi

2003

Journal of Cognitive Neuroscience

159

101

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A large number of imaging studies have identified a role for the posterior parietal lobe, in particular Brodmann's area 7 and the intraparietal sulcus (IPS), in mental rotation. Here we investigated whether neural activity in the posterior parietal lobe is essential for successful mental rotation performance by observing the effects of interrupting this activity during the execution of a mental rotation task. Repetitive transcranial magnetic stimulation (rTMS) was applied to posterior parietal locations estimated to overlie Brodmann's area 7 in the right and the left hemisphere, or to a posterior midline location (sham condition). In three separate experiments, rTMS (four pulses, 20 Hz) was delivered at these locations either 200–400, 400–600, or 600–800 msec after the onset of a mental rotation trial. Disrupting neural activity in the right parietal lobe interfered with task performance, but only when rTMS was delivered 400 to 600 msec after stimulus onset. Stimulation of the left parietal lobe did not reliably affect mental rotation performance at any of the time points investigated. The time-limited effect of rTMS was replicated in a fourth experiment that directly compared the effects of rTMS applied to the right parietal lobe either 200–400 or 400–600 msec into the mental rotation trial. The results indicate that the right superior posterior parietal lobe plays an essential role in mental rotation, consistent with its involvement in a variety of visuospatial and visuomotor transformations.

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Section: Discussionmentioning

confidence: 76%

Parietal Lobe Contribution to Mental Rotation Demonstrated with rTMS

Harris

Miniussi

2003

Journal of Cognitive Neuroscience

159

101

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“…For instance, Riddoch and Humphreys (1995) describe a case with a reduced ability to hold visuospatial information (thus visual span was dramatically reduced when the time between presentation and recall was increased) while the ability to generate information remained intact. MG (Morton & Morris, 1995) also showed an intact ability to generate visual images but was unable to scan or to transform them.…”

Section: Introductionmentioning

confidence: 94%

“…Patients have been reported with deficits in mental rotation ability (Morton & Morris, 1995;Ratcliff, 1979;Riddoch, 1990). We explored HJA's ability to mentally rotate single images using two tests: mental rotation of letters (see Riddoch, 1990) and the Moscovitch letter manipulation task (Moscovitch, Behrmann, & Winocur, 1994; see Experiments 6 and 7).…”

Section: Manipulation Of An Image In Vstmmentioning

confidence: 99%

Visual and Spatial Short-term Memory in Integrative Agnosia

Riddoch

Humphreys

Blott

et al. 2003

Cognitive Neuropsychology

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The extent to which imagery and perceptual processes overlap in the brain has been the focus of a number of studies using different experimental methodologies (e.g., studies of functional brain activation and studies of patients with selective deficits following brain damage). Here we report the results of a number of different experimental investigations exploring visual memory in a patient with a severe perceptual deficit (HJA). We demonstrate that HJA can perform imagery tasks well that require judgements about a single object or object part; however, he experiences difficulty on tasks where he has to respond to the spatial relations between the local parts of objects. He experiences similar difficulties in perceptual processing. We argue that the bottom-up coding of visual images is influenced by the same intermediate visual processes that serve object recognition.

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“…From this neuropsychological research, it emerged that whereas digit span tasks measure verbal working memory, the Corsi block task actually assesses visuospatial working memory (Berch, Krikorian, & Huha, 1998). Over the past 25 years, the task has been widely employed by neuropsychologists, cognitive psychologists, and developmental psychologists and has been used alongside the Brooks spatial matrix task in studies assessing visuospatial working memory in adults (e.g., Hanley et al, 1991;Morton & Morris, 1995).…”

Section: Study 2b Face-to-face Interference With Visuospatial Memory-mentioning

confidence: 99%