The effect of tactile feedback on pantomime of tool use in apraxia

Goldenberg, Georg; Hentze, Sophia; Hermsdörfer, Joachim

doi:10.1212/01.wnl.0000144283.38174.07

Cited by 73 publications

(43 citation statements)

References 15 publications

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“…Note that this may not preclude other aspects of tangibility from affecting tool processing. For example, patients with ideomotor apraxia who show deficits in pantomiming the appropriate actions for a particular tool when cued verbally ('show me how you would use a comb') perform better while holding the tool than without a tool or while holding only the handle (Goldenberg et al 2004).…”

Section: Resultsmentioning

confidence: 99%

Priming tool actions: Are real objects more effective primes than pictures?

et al. 2015

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Humans are faster to grasp an object such as a tool if they have previewed the same object beforehand. This priming effect is strongest when actors gesture the use of the tool rather than simply move it, possibly because the previewed tool activates action-specific routines in dorsal-stream motor networks. Here, we examined whether real tools, which observers could physically act upon, serve as more potent primes than two-dimensional images of tools, which do not afford physical action. Participants were presented with a prime stimulus that could be either a real tool or a visually matched photograph of a tool. After a brief delay, participants interacted with a real tool target, either by 'grasping to move,' or 'grasping to use' it. The identities of the prime and target tools were either the same (congruent trials; e.g., spatula-spatula) or different (incongruent trials; e.g., whisk-spatula). As expected, participants were faster to initiate grasps during trials when they had to move the tool rather than gesture its use. Priming effects were observed for grasp-to-use, but not grasp-to-move, responses. Surprisingly, however, both pictures of tools and real tools primed action responses equally. Our results indicate that tool priming effects are driven by pictorial cues and their implied actions, even in the absence of volumetric cues that reflect the tangibility and affordances of the prime.

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Section: Resultsmentioning

confidence: 99%

Priming tool actions: Are real objects more effective primes than pictures?

et al. 2015

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“…However, the apraxic dissociation of unimpaired incidental motor sequence learning, when responding to the visually presented stimuli, and impaired free recall of the respective motor sequence, is in accordance with the clinical observation that apraxic patients generally perform better when external cues are provided. Tests of pantomime, which provide fewer cues than actual object use, are more sensitive to reveal apraxia-specific deficits in stroke patients (Goldenberg et al, 2004;Weiss et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Apraxia Impairs Intentional Retrieval of Incidentally Acquired Motor Knowledge

Dovern¹,

Fink²,

Saliger³

et al. 2011

J. Neurosci.

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Apraxia caused by left hemispheric stroke typically impairs skilled sequential movements. After stroke, apraxic patients need to reacquire motor skills by motor learning. The current study assessed for the first time incidental motor sequence learning in apraxic patients. Forty-eight human subjects (henceforth called "patients") with left hemispheric stroke affecting the middle cerebral artery territory (18 with apraxia and 30 without apraxia) and 17 age-matched healthy controls were tested on a visuomanual serial reaction time task. Subjects performed four blocks consisting of repetitions of a complex six element sequence containing ambiguous pairwise transitions before a new and unfamiliar sequence was introduced in block 5. Reaction time (RT) disadvantages in this fifth block indicated incidental sequence-specific motor learning. The intentional retrieval of the learned motor knowledge was assessed subsequently with a free recall task. Voxel-based lesion-symptom mapping (VLSM) was performed to investigate for the first time the lesion correlates of deficits in learning and retrieving sequential motor knowledge. Despite generally prolonged RTs, apraxic patients showed sequence-specific motor learning as could be observed in nonapraxic patients and healthy controls. However, apraxic patients showed reduced intentional retrieval of the learned sequence. VLSM revealed that impaired intentional retrieval of motor sequence knowledge resulted from dorsal premotor cortex lesions. Apraxic patients showed a dissociation of preserved incidental motor (sequence) learning and deficient intentional retrieval of this incidentally learned motor knowledge. The data suggest that novel approaches for treating apraxia should focus on incidental motor learning, but that automatic rather than intentional retrieval strategies should be enforced.

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Section: Introductionmentioning

confidence: 99%

“…These patients are commonly impaired in pantomiming and imitating object-related actions, such as hammering or sawing, when the object is not present (Buxbaum, Giovannetti, & Libom, 2000;Poizner et al, 1998) but perform more accurately with the object in hand (Goldenberg, Hentze, & Hermsdörfer, 2004;Heilman & Gonzalez Rothi, 1993). Previous explanations of this difference have focused on the additional tactile feedback available when objects are held (Poizner et al, 1998; but see Goldenberg et al, 2004, for conflicting evidence). An alternative, although not mutually exclusive, explanation is that pantomime and imitation without an object are strongly weighted toward intrinsic control (e.g., specifying joint rotations at the shoulder and elbow to make a hammering motion), whereas object-related actions may be more strongly weighted toward extrinsic control (e.g., specifying the trajectory of the hammer through space).…”

Section: Introductionmentioning

confidence: 99%

Deficits in Movement Planning and Intrinsic Coordinate Control in Ideomotor Apraxia

Jax

Buxbaum

Moll

2006

Journal of Cognitive Neuroscience

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Abstract& Two central issues in the field of motor control are the coordinate frame in which movements are controlled and the distinction between movement planning and online correction. In this study we used these issues to frame several hypotheses about the deficits underlying ideomotor apraxia (IMA). In particular, we examined whether ideomotor apraxics exhibited (1) deficits in movement control in intrinsic (body relative) coordinates with better control in extrinsic (workspace relative) coordinates, (2) deficits in movement planning that are compensated for by an overreliance on online correction, or (3) both deficits. Patients with IMA and two comparison groups performed movement tasks that relied preferentially on either intrinsic or extrinsic coordinate control when online correction was either possible or impossible. Participants performed posture imitation and grasp imitation movements to body-and object-relative end positions in the presence or absence of visual feedback. Consistent with the intrinsic coordinate control hypothesis, patients with IMA showed a significantly greater disparity than the other two groups between movements made to bodyrelative and object-relative targets as well as between imitation of meaningless postures and grasping. Consistent with the correction overreliance hypothesis, the IMA group was more disrupted than the other groups by the removal of vision. Thus, IMA patients exhibit behavioral patterns consistent with both deficient intrinsic coordinate control and overreliance upon visual feedback. Finally, lesion analysis suggests that damage to the left inferior parietal lobe (Brodmann's areas 39 and 40) may play a key role in both behavioral deficits. &

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The effect of tactile feedback on pantomime of tool use in apraxia

Cited by 73 publications

References 15 publications

Priming tool actions: Are real objects more effective primes than pictures?

Priming tool actions: Are real objects more effective primes than pictures?

Apraxia Impairs Intentional Retrieval of Incidentally Acquired Motor Knowledge

Deficits in Movement Planning and Intrinsic Coordinate Control in Ideomotor Apraxia

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