\\HEN One iS Co 01SUited bV a HaIll\xhohias at skiti liscase, onl t1c bic1;I region1 0o11n, onle imimediately thiniks(of i hi-cc (1diCeases inpetigo coiltagiusa, SVtusiS, and rilig-woriml. All thlr-ee dliSeaISeS aeC C0 'It oios, and iax he ('ont racted at a barber's, henice the term 'd (firv shave,' tile okl termi for-rin worm of thle beard being "barber's itclh.' On tle other hand, it is mnorl...

Models of written word recognition in languages using the Roman alphabet assume that a word's visual form is quickly mapped onto abstract units. This proposal is consistent with the finding that masked priming effects are of similar magnitude from lowercase, uppercase, and alternating-case primes (e.g., beard-BEARD, BEARD-BEARD, and BeArD-BEARD). We examined whether this claim can be readily ge...

In 16-cell Xenopus embryos, horseradish peroxidase (HRP) was injected into blastomere D1.2 on one side. No Rohon-Beard neurons originated from D1.2 in either of the two patterns of cleavage that were studied (Jacobson, M. (1981) J. Neurosci. 1: 918-922). In other embryos, after injection of HRP into D1.2, the neighboring ventral blastomere V1.2, from which 68 to 90% of Rohon-Beard neurons norma...

Responses to gentle touch in young Xenopus tadpoles are mediated by spinal cord sensory Rohon-Beard neurons. Tadpoles also respond to noxious stimuli that elicit 'skin impulses', which propagate between epithelial cells over the whole body surface, somehow entering the CNS to generate a response. After hatching (~48 h post-fertilization), skin impulse signals enter the CNS only via cranial nerv...

Many categories of objects, such as human faces, can be naturally viewed as a composition of several different layers. For example, a bearded face with glasses can be decomposed into three layers: a layer for glasses, a layer for the beard and a layer for other permanent facial features. While modeling such a face with a linear subspace model could be very difficult, layer separation allows for...