{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Fncts forward models are central to motor control

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 02): 3 levels • Body image: lexical-semantic knowledge of the body and its functions • Body structure description: knowledge of spatial relationships • Body schema: dynamic online-representation of the body in space from somatosensory afferences; • Plus: intention & motor components? 53 Body schema: necessary 4 sensorim. fncts. • Forward models are central to motor control. Intention, desired sensory change Feedback Motor command ce eren Eff opy c Forward model Predicted movement Viking lander 3 Motor plant Movement of effector Feedback Teaching signal Inverse model Body schema: necessary 4 sensorim. fncts. Hermosillo et al. (2011) Body schema: necessary 4 sensorim. fncts. • Tactile temporal order judgments are more difficult with crossed hands. • TOJ are also more difficult when the future hand posture will be crossed. • Evidence for a forward model of motor control incorporating future posture. were observed. This expression might represent a genetic indicator of faculties of the intact and brain-damaged human brain. Body schema: necessary 4 sensorim. fncts. five minutes of food retrieval with the handheld rake (Figure 1c). Bimodal neurons with the above properties were named ‘distal type’ neurons. Other bimodal neurons with sRFs located around shoulder/neck (named ‘proximal type’, Figure 1e) had vRFs covering the space reached by the arm (Figure 1f). After tool-use, these proximal vRFs expanded to code the space now accessible with (Figure 1g). Such vRF expansions may constitute th substrate of use-dependent assimilation of the the body schema, suggested by classical neurolo also Box 2). Hence, any expansion of the vRF onl Visuo-somatosensory cells for dexterous tool-use in macaque. Distal-type neurons • Visual RFs (pink) of neurons in intraparietal cortex change with tool-use. • sRF = somatosensory RF (blue) (a) (b) (c) (d) sRF Before tool-use After tool-use Passive holding Proximal-type neurons (e) (f) (g) sRF Before tool-use After tool-use Body schema: Out of body Impaired integration of somatosensory & vestibular somatoinformation? sensory OBE, • ‘Out-of-body’ experiences body part (OBEs): sensations in which illusions, vestibular consciousness becomes detached from the body, taking up a remote viewing position • Near-death, across cultures • Right angular gyrus • Vestibular: sinking into the bed, falling motor auditory seizure focus Blanke et al. (2002) • “I see myself lying in bed, from above, but I only see my legs and lower trun...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online