Apraxias

Binkofski, Ferdinand; Fink, Gereon R.

doi:10.1007/s00115-005-1908-7

Cited by 25 publications

(14 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Shematic relative location of the dorso-dorsal (red) and the ventro-dorsal (green) sub-streams of the dorsal stream, as well as the ventral stream (blue) (from Binkofski and Fink (2005)). …”

Section: Figmentioning

confidence: 99%

Two action systems in the human brain

2013

View full text Add to dashboard Cite

The distinction between dorsal and ventral visual processing streams, first proposed by Ungerleider and Mishkin (1982) and later refined by Milner and Goodale (1995) has been elaborated substantially in recent years, spurred by two developments. The first was proposed in large part by Rizzolatti and Matelli (2003) and is a more detailed description of the multiple neural circuits connecting the frontal, temporal, and parietal cortices. Secondly, there are a number of behavioral observations that the classic “two visual systems” hypothesis is unable to accommodate without additional assumptions. The notion that the Dorsal stream is specialized for “where” or “how” actions and the Ventral stream for “What” knowledge cannot account for two prominent disorders of action, limb apraxia and optic ataxia, that represent a double dissociation in terms of the types of actions that are preserved and impaired. A growing body of evidence, instead, suggests that there are at least two distinct Dorsal routes in the human brain, referred to as the “Grasp” and “Use” systems. Both of these may be differentiated from the Ventral route in terms of neuroanatomic localization, representational specificity, and time course of information processing.

show abstract

Section: Figmentioning

confidence: 99%

Two action systems in the human brain

2013

View full text Add to dashboard Cite

show abstract

“…Der ventro-dorsale Strom geht über den inferioren parietalen Lobulus und ist für die komplexe zeitlich-räumliche Planung von Bewegungen zuständig. Der ventrale Strom (blau) ist für die visuelle Objekterkennung zuständig [10].…”

Section: Pathophysiologieunclassified

“…Imitationsdefizite haben dennoch eine hohe klinische Relevanz, da sie ein wesentliches Hindernis für das motorische (Imitations-) Lernen in der Physiotherapie nach Schlaganfall darstellen. Außerdem nehmen Störungen der Gestik den Schlaganfallpatienten mit Aphasie (und diese ist in der Mehrzahl der Fälle mit der Apraxie verschwistert) eine wichtige Kompensationsmöglichkeit bei der Kommunikation, da Gesten als sprachbegleitende oder sprachersetzende Möglichkeit, sich auszudrücken, entfallen [10]. In dieser Situation kann ein Gestentraining sinnvoll sein.…”

Section: Klinische Bedeutung Und Therapeutische Konsequenzenunclassified

Apraxien

Binkofski¹

2020

Neurologie up2date

View full text Add to dashboard Cite

“…Einleitung ! Unter Apraxien fasst man Störungen der höheren motorischen Kognition zusammen, die nicht durch basale motorische Defizite (Lähmung), basale sensorische Defizite (Deafferentierung) oder Störungen der Kommunikation (Aphasien) hinreichend erklärt werden können [1]. Während es auch im Rahmen von neurodegenerativen kognitiven Abbauprozessen, wie z.…”

unclassified

“…Entsprechend fassen wir in dieser Übersichtsarbeit neue Erkenntnisse zur Pathophysiologie der Apraxien, insbesondere der ideomotorischen und der ideatorischen Apraxie, zusammen. Bei diesen beiden Formen der posterioren, polymodalen Apraxien (für eine Übersicht der gängigen Apraxieklassifikationen siehe [1]) handelt es sich um eine Störung der Bewegungsplanung (bei der ideomotorischen Apraxie) bzw. um eine Störung des Bewegungskonzeptes (bei der ideatorischen Apraxie).…”

unclassified

Neue Erkenntnisse zur Pathophysiologie der Apraxien durch funktionelle Bildgebung

Weiss

Fink²

2008

Fortschr Neurol Psychiatr

Self Cite

View full text Add to dashboard Cite

Apraxias are disorders of motor cognition that cannot be explained by basic sensorimotor deficits or aphasia. The relatively high frequency of apraxia (approximately half of all patients with left-hemispheric stroke suffer from apraxia during the acute phase) as well as its prognostic value for determining the outcome of rehabilitative therapy clearly convey the necessity of more comprehensive research into the pathophysiology of apraxia in order to develop new therapeutic strategies. In recent years, functional imaging (PET and fMRI) has helped to provide important new insights into the pathophysiology of ideomotor apraxia (defective movement plan) and ideational apraxia (defective action concept). In this review, the neural bases for the clinically observed dissociations between the imitation of abstract and symbolic movements (as in ideomotor apraxia) and for the object-trigger system (which is disturbed in ideational apraxia) will be exemplified. Furthermore, we will recapitulate recent studies that provide evidence for the complementary functions of the right and left parietal cortices in the spatial and temporal organization of complex, object-related actions. The particular importance of the left parietal cortex for motor cognition is further supported by studies examining the integration of spatial and temporal movement information during the generation of a movement plan as well as by the generation of such movement plans in the left parietal cortex independent from the hand that executes the movement.

show abstract

Apraxias

Cited by 25 publications

References 78 publications

Two action systems in the human brain

Two action systems in the human brain

Apraxien

Neue Erkenntnisse zur Pathophysiologie der Apraxien durch funktionelle Bildgebung

Contact Info

Product

Resources

About