Precise Oculomotor Correlates of Visuospatial Mental Rotation and Circular Motion Imagery

Journal of Cognitive Neuroscience - Tập 15 Số 8 - Trang 1244-1259 - 2003
Claudio de’Sperati1
1Universitá Vita-Salute San Raffaele, Milan

Tóm tắt

Abstract Visual imagery is a basic form of cognition central to activities such as problem solving or creative thinking. Phenomena such as mental rotation, in which mental images undergo spatial transformations, and motion imagery, in which we imagine objects in motion, are very elusive. For example, although several aspects of visual imagery and mental rotation have been reconstructed through mental chronometry, their instantaneous evolution has never been directly observed. We paired mental chronometry to eye movement recording in subjects performing a visuospatial mental rotation task and an instructed circular motion imagery task. In both tasks, sequences of spontaneous saccades formed curved trajectories with a regular spatio-temporal evolution. In the visuospatial mental rotation task, saccadic amplitude decreased progressively within each sequence, resulting in an average gaze rotation with a bell-shaped asymmetrical angular velocity profile whose peak and mean increased with the amount of the to-be-performed rotation, as in reaching movements. In the second task, the average gaze rotation reproduced faithfully the to-be-imagined constant-velocity circular motion, thus excluding important distortions in the oculomotor performance. These findings show for the first time the instantaneous spatio-temporal evolution of mental rotation and motion imagery. Moreover, the fact that visuospatial mental rotation is modeled as a reaching act suggests that reaching pertains to the realm of visuospatial thinking, rather than being restricted to the motor domain. This approach based on eye movement recording can be profitably coupled to methods such as event-related potentials, transcranial magnetic stimulation, or functional magnetic resonance to study the precise neuronal dynamics associated with an ongoing mental activity.

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Tài liệu tham khảo

10.1016/0025-5564(75)90075-9

10.1016/S0028-3932(00)00025-7

10.1002/1097-0193(200012)11:4<273::AID-HBM40>3.0.CO;2-0

10.1162/jocn.1997.9.1.27

10.1093/brain/119.1.89

10.3758/BF03204234

10.1016/S1364-6613(00)01511-4

10.1007/s002210050765

10.1097/00001756-199708180-00023

10.1007/s002210000408

10.1007/s002210050792

10.1093/cercor/10.2.175

10.1126/science.2911737

10.1007/BF00236309

10.1007/PL00005692

10.1046/j.1460-9568.1998.00181.x

10.1037/h0026771

10.1017/S0140525X00034026

10.1097/00001756-199702100-00020

Kosslyn S. M., 1973, Cognitive Psychology, 8, 441

10.1017/S0048577298001516

10.1038/35090055

10.1097/00001756-200108080-00046

10.1016/S1364-6613(00)01512-6

10.1207/s15516709cog2602_3

10.1016/S1364-6613(99)01418-7

10.1037/0096-1523.20.4.709

10.1038/375054a0

10.1007/BF00227791

10.1093/brain/122.12.2337

10.1037/0033-2909.124.3.372

10.1162/089892900562129

10.3758/BF03204268

10.1126/science.171.3972.701

10.1016/S0165-0173(97)00060-X

10.1162/jocn.1997.9.4.419

10.1038/375139a0

10.1016/S0010-0277(98)00032-8

10.1037/0096-1523.24.2.397

10.1016/0014-4886(81)90072-8

10.1098/rspb.1993.0068

10.1111/j.1467-9280.1997.tb00459.x

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Journal of Cognitive Neuroscience

Tập 15 Số 8

1244-1259

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