@article{ShakiFischer2014,
  author    = {Shaki, Samuel and Fischer, Martin H.},
  title     = {Random walks on the mental number line},
  series = {Experimental brain research},
  volume    = {232},
  journal   = {Experimental brain research},
  number    = {1},
  publisher = {Springer},
  address   = {New York},
  issn      = {0014-4819},
  doi       = {10.1007/s00221-013-3718-7},
  pages     = {43 -- 49},
  year      = {2014},
  language  = {en}
}
@article{PinhasShakiFischer2014,
  author    = {Pinhas, Michal and Shaki, Samuel and Fischer, Martin H.},
  title     = {Heed the signs: Operation signs have spatial associations},
  series = {The quarterly journal of experimental psychology},
  volume    = {67},
  journal   = {The quarterly journal of experimental psychology},
  number    = {8},
  publisher = {Routledge, Taylor \& Francis Group},
  address   = {Abingdon},
  issn      = {1747-0218},
  doi       = {10.1080/17470218.2014.892516},
  pages     = {1527 -- 1540},
  year      = {2014},
  abstract  = {Mental arithmetic shows systematic spatial biases. The association between numbers and space is well documented, but it is unknown whether arithmetic operation signs also have spatial associations and whether or not they contribute to spatial biases found in arithmetic. Adult participants classified plus and minus signs with left and right button presses under two counterbalanced response rules. Results from two experiments showed that spatially congruent responses (i.e., right-side responses for the plus sign and left-side responses for the minus sign) were responded to faster than spatially incongruent ones (i.e., left-side responses for the plus sign and right-side responses for the minus sign). We also report correlations between this novel operation sign spatial association (OSSA) effect and other spatial biases in number processing. In a control experiment with no explicit processing requirements for the operation signs there were no sign-related spatial biases. Overall, the results suggest that (a) arithmetic operation signs can evoke spatial associations (OSSA), (b) experience with arithmetic operations probably underlies the OSSA, and (c) the OSSA only partially contributes to spatial biases in arithmetic.},
  language  = {en}
}
@article{HartmannMartarelliMastetal.2014,
  author    = {Hartmann, Matthias and Martarelli, Corinna S. and Mast, Fred W. and Stocker, Kurt},
  title     = {Eye movements during mental time travel follow a diagonal line},
  series = {Consciousness and cognition},
  volume    = {30},
  journal   = {Consciousness and cognition},
  publisher = {Elsevier},
  address   = {San Diego},
  issn      = {1053-8100},
  doi       = {10.1016/j.concog.2014.09.007},
  pages     = {201 -- 209},
  year      = {2014},
  abstract  = {Recent research showed that past events are associated with the back and left side, whereas future events are associated with the front and right side of space. These spatial-temporal associations have an impact on our sensorimotor system: thinking about one's past and future leads to subtle body sways in the sagittal dimension of space (Miles, Nind, \& Macrae, 2010). In this study we investigated whether mental time travel leads to sensorimotor correlates in the horizontal dimension of space. Participants were asked to mentally displace themselves into the past or future while measuring their spontaneous eye movements on a blank screen. Eye gaze was directed more rightward and upward when thinking about the future than when thinking about the past. Our results provide further insight into the spatial nature of temporal thoughts, and show that not only body, but also eye movements follow a (diagonal) "time line" during mental time travel. (C) 2014 Elsevier Inc. All rights reserved.},
  language  = {en}
}