PSYCHOPHYSICS LABORATORY

Research areas: Human psychophysical experiments on hearing, touch, vision, attention, memory and related brain processes. Experimental psychology. Non-invasive studies of electrophysiological potentials.

Facilities: Sound-vibration proof booth. Electrodynamic shaker. X-Y-Z manipulators. LVDT sensor and amplifier. White-noise generator. Headphones. Personal computer. UPS. A/D data input/output card. Low-pass filter. High-pass filter. DC-low frequency power amplifier. Digital and analog oscilloscopes. Digital attenuator. Audio power amplifier. High-Z differential amplifier. Micromanipulator. Digital caliper. Isolated stimulator. Digital camera. Video monitor. Digital sound-level meter. Digital light meter. Stereoscope. Fotonic sensor. Aesthesiometer. Tuning forks. Semmes-Weinstein monofilaments. Digital multimeter. Temperature probe. Lock-in amplifier. Frequency counter. Arbitrary waveform generator. Clinical probe microphone. Insert ear-phones. 40-channel EEG system. Impedance head and conditioner.

Ongoing projects:

Emotional effects on sensory function in autism.

Nonlinear time-series analysis of monkey vocalizations.

Study of lightness contrast in retinal degeneration.

Binocular effects in contrast perception.

Tactile evoked potentials.

Optical tactile sensor

Luminance vs. motion detection

Finite-element model for the Pacinian corpuscle

Students: Mustafa Z. Yıldız (M.S.), Abdülaziz Akkılık (M.S.), Onur İşcan (M.S.), Serkan Yelke (M.S.), Duygu Torun (M.S.), Esin Yavuz (M.S.)

M.S. theses completed:

1. Özge Kalkancı (2005) "Measurement of vibrotactile thresholds of the Non-Pacinian I channel."

2. Canan Aslı Utine (2006) "Supra-threshold contrast perception in glaucomatous and normal human subjects."

3. Çiğdem Öztek (2006) "Measurement of vibrotactile thresholds of normal children."

4. Ali Murat (2006) "Active and passive processing of sequential tactile inputs."

5. Serkan Çelik (2006) "Mental rotation and mirror image recognition in blinds, blindfolded, and sighted."

6. Gamze Bölükbaşı (2007) "Effects of various parameters on binocular rivalry."

7. Seref Mete Dinçer (2007) "Magnitude estimation by the Non-Pacinian I tactile channel."

LAB. PICTURES

          Control room:                                                                      Subject booth:

          Stereoscope:                                                                        Accelerometer glove: