A power point presentation with metaphors and animated videos will be used. The PNE will be held in 10 sessions of 20 minutes each. The intervention will be developed using content according to the book "Explain Pain" and the web page www.retrainpain.org.

The participants will have to judge the laterality of different cervical images presented on the screen of a cell phone. The laterality task will be executed using an application called Recognize Neck, developed by the NOI group. The procedure will begin with a familiarization test with the "Basic" level followed by a laterality discrimination task. It will be performed using 20 images, with 5 seconds for each image, beginning with the "Vanilla" program and progressively increasing the difficulty using the "Context" and "Abstract" programs. The estimated time to complete the task will be about 10 minutes per session.

The patients will see videos showing the jaw and cervical exercises with the same series and repetitions that they will actively perform in the session. Therefore, the training of the action observation will be carried out dynamically. The patient will be asked to think and visualize the movement that he/she will have to perform later. It is estimated 10 minutes per session for the AO.

A jaw and neck exercise program will be carried out in 3 series of 10 repetitions per session will be planned with 1minute rest between exercise. The exercises will be executed with a total time per session of 20 minutes, initially in the clinic and later at home. In the clinic, verbal and tactile instructions will be provided for the correct execution of the exercises and later they will be sent through WhatsApp and / or mail to perform them at home.

Counselling include education about the anatomical, biomechanical and psychosocial factors relationed with temporomandibular disorders, guidance regarding the parafunction jaw activities for eg will be taught the resting postural position of the mandible (teeth apart, lips slightly touching and tongue not pushing against the teeth).

Temporal Summation (TS) will be induced using a pressure algometer. For TS, 10 consecutive pressure pulses will be elicited using the PPT (obtained before). For each pulse of the TS procedure, the pressure will increase at a rate of 1 kg/second until the PPT is reached, where it will remain for one second before being released. The pressure pulses will be repeatedly performed with an interval between stimuli of one second. Participants will be instructed to assess the pain intensity of the first and tenth pressure pulses according to the NPRS. The TS score will be obtained by subtracting the first NPRS score from the last score. The higher the TS score, the more efficient nociceptive signaling for the brain.

For the Conditioned Pain Modulation (CPM) a occlusion cuff will be used as a conditioning stimulus. The cuff will be inflated in the non-dominant arm at approximately 20 mm Hg/second until the subjects report experiencing pain at a value of 5/10 using the NPRS, when inflation will stop. Subjects will adapt to the stimulus for 30 seconds, and the first PPT measurement will be performed. Then, the cuff will then be deflated and 1 minute later the second PPT measurement will be taken.

The Central Sensibilization Inventory (CSI) is a self-report outcome measure that consists of two parts. Part A consists of 25 statements where the participant must answer how often he/she experience each symptom. Individual items are scored from "0" (never) to "4" (always), resulting in a total score range for all 25 items from "0" to "100". Part B asks if the participant have been previously diagnosed by a doctor for some diseases (YES/NO). Part B of the CSI is for information only and is not qualified. A score of more than 40 indicates the presence of central sensitization.

The Pain Catastrophizing scale (PCS) is a 13-items instrument that ask participants to reflect on past painful experiences, and to indicate the degree to which they experienced each of 13 thoughts or feelings when experiencing pain, on 5-point scales with the end points being (0) not at all and, (4) all the time. A total score (ranging from 0 to 52) is obtained, along with three subscale scores that assess rumination, magnification, and helplessness. A higher total PCS score of 30 represents a clinically relevant level of catastrophizing.

The Spanish version of the Tampa Scale of Kinesiophobia for Temporomandibular Disorders (TSK-TMD-S) consists of 10 items formulated positively and distributed in 2 subscales as follows: (1) somatic approach (items 1, 2, 3, 4 and 10) and (2) avoidance of activities (items 5 to 9). The total score can range from 10 to 40 (somatic focus, 5-20; avoidance of activity, 5-20), with higher scores indicating an increased fear of jaw movement and re-injury. The cut-off point to consider kinesiophobia is 23 points.

To assess adherence to home exercise, a google form will be sent weekly to the volunteers. It will consist of questions related to the number of times patients performed the exercises during the week and to the difficulties they encountered. Adherence to exercises will be expressed as a percentage [(number of exercise sessions performed / number of exercise sessions prescribed) X100].