Article

Common and distinct brain activation to viewing dynamic sequences of face and hand movements

Department of Psychology and Krasnow Institute for Advanced Study, George Mason University, MSN 3F5, Fairfax, VA 22030, USA.
NeuroImage (Impact Factor: 6.36). 10/2007; 37(3):966-73. DOI: 10.1016/j.neuroimage.2007.05.058
Source: PubMed

ABSTRACT

The superior temporal sulcus (STS) and surrounding lateral temporal and inferior parietal cortices are an important part of a network involved in the processing of biological movement. It is unclear whether the STS responds to the movement of different body parts uniformly, or if the response depends on the body part that is moving. Here we examined brain activity to recognizing sequences of face and hand movements as well as radial grating motion, controlling for differences in movement dynamics between stimuli. A region of the right posterior STS (pSTS) showed common activation to both face and hand motion, relative to radial grating motion, with no significant difference between responses to face and hand motion in this region. Distinct responses to face motion relative to hand motion were observed in the right mid-STS, while the right posterior inferior temporal sulcus (pITS) and inferior parietal lobule (IPL) showed greater responses to hand motion relative to face motion. These findings indicate that while there may be distinct processing of different body part motion in lateral temporal and inferior parietal cortices, the response of the pSTS is not body part specific. This region may provide input to other parts of a network involved with processing human actions with a high-level visual description of biological motion.

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    • "For example, the amygdala (AMG) responds to faces, especially to facial expressions of fear (Adolphs and Spezio, 2006). Face selective regions along the superior temporal sulcus (STS) are involved in detecting facial movements associated with eye gaze, speech, and expression of emotions and intentions (Puce et al., 1998; Allison et al., 2000; Thompson et al., 2007; Cohen Kadosh et al., 2010; Esterman and Yantis, 2010). And faceselective regions along the fusiform gyrus (FG), collectively known as the fusiform face area (FFA) are implicated in face detection and identity recognition (Kanwisher et al., 1998; Golby et al., 2001; Grill-Spector et al., 2004; Kanwisher and Yovel, 2006). "
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